Russia has deployed nearly all staged forces in Ukraine, Pentagon says

US sending additional 500 troops to Nato countries in Europe and deploying refuelling aircraft in Greece

A Ukrainian serviceman stands near captured Russian tanks, one painted in the colours of the Ukrainian national flag and the other marked with the letter 'Z' in the north of the Kharkiv region, Ukraine. Reuters

Russian military vehicles with the letter 'Z' painted on them. Reuters

French Air Force jets patrol airspace over Poland. Nicolas Tucat / AFP

The patrol is part of Nato's surveillance system. Photo by Nicolas Tucat / AFP

The German-flagged 'Seacod' oil tanker moored at Birkenhead Docks near the Stanlow Oil Refinery in the UK.

A woman holds the hand of a child as they flee Ukraine. AP Photo / Markus Schreiber

A young woman clutches a doll as she crosses the border in Medyka, Poland. AP Photo / Markus Schreiber

A woman weeps after finding a friend at the border crossing in Medyka. AP Photo / Markus Schreiber

People walk with their belongings as they flee Ukraine. AP Photo / Markus Schreiber

Ukrainian refugees arrive at Berlin central station, Germany, from Poland on March 4. EPA / Filip Singer

Russian troops entered Ukraine on February 24, prompting the country's president to declare martial law and triggering a series of announcements by western countries to impose severe economic sanctions on Russia. EPA / Filip Singer

Military vessels docked at the military harbour of Constanta, Romania, on March 4. Daniel Mihailescu / AFP

A child plays with a pigeon during a protest in San Jose, Costa Rica, against the Russian invasion in Ukraine. Ezequiel Becerra / AFP

Ukrainian citizens in San Jose, Costa Rica, protest against the Russian invasion in Ukraine on March 4. Ezequiel Becerra / AFP

People fleeing Ukraine wait to board a bus in Palanca Village, Moldova. EPA / Dumitru Doru

Ukrainians living in Britain join a protest at Trafalgar Square, London. EPA / Andy Rain

Ludmila Shkarupa, 73, from Ukraine, sits on a chair wrapping herself with a sleeping bag to avoid the cold at the border crossing in Medyka, Poland. AP

A view shows a thermal power plant destroyed by shelling amid the Russian invasion of Ukraine in the town of Okhtyrka in the Sumy region. Reuters

People fleeing Russia's invasion of Ukraine use mobile devices in a temporary refugee centre located at a local track-and-field athletics stadium in Chisinau, Moldova. Reuters

A local resident walks past the remains of a house of culture following a night air raid in the village of Byshiv, 40 kilometres west of Kyiv, Ukraine. AP

A member of the Ukrainian military guards an evacuation train of women and children who fled fighting in Bucha and Irpin. Getty Images

A member of the Ukrainian military gives instructions to women and children that fled fighting in Bucha and Irpin before boarding an evacuation train to Kyiv after heavy fighting overnight forced many to leave their homes. Getty Images

A person demonstrates outside the Russian embassy in London following Russia's invasion of Ukraine. Reuters

The Danish rescue group Falck A/S has donated 30 ambulances to Ukraine and neighbouring countries, where they will be used by local emergency services. AFP

An aerial view of the remains of the local house of culture following a night air raid in the village of Byshiv, 40 kilometres west of Kyiv, Ukraine. AP

People fleeing Russia's invasion of Ukraine rest in a temporary refugee centre located at a local track-and-field athletics stadium in Chisinau, Moldova. Reuters

Ukrainian Oleg, who decided to remain in Irpin, comforts his son, Maksim, and his wife, Yana, before the arrival of an evacuation train to the city of Kyiv. EPA

Yevghen Zbormyrsky, 49, runs in front of his burning house after being shelled in the city of Irpin, outside Kyiv. AFP

People remove personal belongings from a burning house after being shelled in Irpin. AFP

Medical workers tend to a Ukrainian serviceman wounded during the fighting with Russian troops near the Ukrainian capital, in a hospital in Kyiv. AFP

A mother of a wounded Ukrainian serviceman waits outside his ward in a hospital in Kyiv. AFP

Refugees from Ukraine arrive at an assistance point organised in the sports hall of a primary school in Lubycza Krolewska in Poland. EPA

A member of Ukraine's Territorial Defence Forces at a checkpoint in Kyiv. Reuters

People carry their belongings past the debris of last week's combat in Kyiv. AFP

Shelves in a supermarket stand empty in Bila Tserkva, Ukraine. Reuters

War refugees from Ukraine at the assistance point organised at the Torwar sports hall in Warsaw, Poland. EPA

Ukrainian servicemen, wounded during the fighting with Russian troops near the Ukrainian capital, rest outside a hospital in Kyiv. AFP

A 3-year-old boy watches cartoons on a tablet while his mother sews military vests for the Ukrainian army in the western city of Lviv. AFP

A woman's shock as she stands in front of a house burning after being shelled in Irpin, outside Kyiv. AFP

People fleeing from Ukraine queue to board on a bus at the border crossing in Medyka, Poland. AP

Ukrainian refugees are tested for Covid-19 in a reception centre in Vienna, Austria. AFP

US Secretary of State Antony Blinken and Nato Secretary General Jens Stoltenberg pose with foreign ministers after a meeting at the alliance's headquarters in Brussels, Belgium. Reuters

People who fled Ukraine wait for a bus to take them to the train station in Przemysl, at the border crossing in Medyka, Poland. AP Photo

The extraordinary meeting of Nato ministers of foreign affairs about Russian aggression in Ukraine at Nato headquarters in Brussels, Belgium. EPA

Messages in support of Ukraine on a board in the Ukrainian pavilion at Expo 2020 Dubai. AFP

Firefighters at a warehouse that caught fire after shelling in the village of Chaiky in the Kyiv region. Reuters

The wreckage of a missile at a bus terminal in Kyiv. Reuters

A crater in front of a house damaged by shelling in the village of Hatne. Reuters

The damaged administrative building of the Zaporizhzhia nuclear power plant in Enerhodar, a city in the Zaporizhzhia region. Reuters

A bright object lands on the grounds of Zaporizhzhia nuclear power plant in Enerhodar, Ukraine, during heavy shelling by Russian forces. AP

Zlata, 3, with her face painted in the colours of the Ukrainian flag, stands on the Romanian side of the border with Ukraine after fleeing the country. AP

Ukrainian President Volodymyr Zelenskyy attends an interview with foreign media in Kyiv. Reuters

Ukrainian artillerymen maintain their position in the Luhansk region. AFP

Women and children try to board a train bound for Lviv, at a station in Kyiv. AP

US soldiers on patrol near a military camp in Arlamow, Poland, near the border with Ukraine. AFP

A woman and child look out the window of a train at a station in Kyiv. AP

A descendant of Ukrainian immigrants attends Mass at a Ukrainian Orthodox church in Canoas, Brazil. Reuters

Boxes of donations destined for Ukraine at the St Michael's Ukrainian Catholic Church in Montreal, Canada. AP

Firefighters battle a blaze at a damaged building in the Ukrainian city of Chernihiv after a Russian air raid. AP

A woman in Frankfurt, Germany, attends a protest against Russia's military offensive in Ukraine. AFP

Live updates: follow the latest news on Russia-Ukraine

Russia has deployed almost all of its combat power that had been staged on the border with Ukraine, the US Department of Defence said on Monday, as the war approaches its third week.

A senior US defence official told reporters that "[Russian President Vladimir] Putin has committed nearly 100 per cent of his combat power in Ukraine".

The US has been tracking the deployment of Russian troops to the border since December and estimated a force of more than 150,000 had been stationed to the east of Ukraine and about 30,000 had been sent to Belarus.

But despite a high number of casualties reported on the Russian side, the US is not seeing indications Mr Putin will send in additional troops.

“We have not seen new indications that they [Russians] are preparing to move additional battalion tactical groups from elsewhere the country to shore up what they put in the Ukraine,” the official said.

The Pentagon estimates Russia has launched more than 625 missiles of different ranges inside Ukraine, including surface-to-air and cruise missiles.

The official noted an increase in the bombardment of civilian targets, including infrastructure and residential areas in the country.

He said this is “all the more evidence of the reckless nature” of Russia's aggression, but did not confirm whether the strikes were believed to be deliberate or “simply the result of imprecision".

Despite the heavier bombardment, the movement of Russian forces appears to have stalled outside the Ukrainian capital.

“There is fighting in Kyiv, they continue to bombard it. But we still believe that the main advance is still stalled outside the city,” the official said.

He pointed to stiff resistance by the Ukrainians, reiterating that the country's airspace remains contested.

Asked about a Wall Street Journal report claiming Russia is recruiting fighters from Syria to help in Ukraine, the US defence official said it’s “accurate”.

“We find that noteworthy that [Mr Putin] believes he needs to rely on foreign fighters to supplement what is a very significant commitment of combat power inside Ukraine as it is.”

The US official said US Secretary of Defence Lloyd Austin has authorised sending 500 additional troops to Europe to support Nato operations.

The US is also dispatching a KC-135 refuelling aircraft to Greece and air operations support teams to Poland and Romania.