The summit has also called for Russia to end the annexation of Crimea

 
Ukrainian government forces are manning checkpoints in Mariupol - as rebel shelling was heard in surrounding areas

At the Wales summit, Nato said it "stands with Ukraine" in the face of Russia's "destabilising" influence.

Nato also called on Russia "to pull back its troops" from Ukraine and end the "illegal" annexation of Crimea.

Nato Secretary-General Anders Fogh Rasmussen said no-one wanted conflict with Russia and the best way forward was a political solution.

Some 2,600 people have died in fighting between Ukrainian troops and rebels. Ukraine's military says 837 its soldiers have died since the conflict erupted in April.
Mariupol threatened

Ukrainian government forces have recently suffered several losses of territory, after rebels launched offensives in both the Luhansk and Donetsk regions, and further south around the city of Mariupol on the Azov Sea.

Reports are emerging that the separatists have begun shelling the outer defences of Mariupol. Eyewitnesses spoke of gunfire.
line
At the scene: Fergal Keane, Mariupol
Ukrainians demonstrate in support of the army in Mariupol, 4 September 2014 Mariupol residents hope for peace but brace for war

Tonight we can hear explosions close to Mariupol. These come after a day in which rebel forces pushed towards the city from the recently taken town of Novoazovsk.

At a Ukrainian government position on the edge of Mariupol, troops told us they had pulled back after coming under fire from what they claimed were Russian tanks.

However, when the local governor Serhiy Taruta arrived on the scene, he insisted there had been no retreat. "It is just our soldiers relieving other soldiers on a rotation," he said.

The situation is confused and the atmosphere volatile. At one point a vehicle arrived with a wounded man. The soldiers - from the volunteer "Azov" battalion - screamed at journalists to put down their cameras.

Later, several hundred people gathered in Mariupol to demonstrate for peace. They will be hoping the talk of a ceasefire plan becomes a lasting achievement in the next few days. In the meantime, however, the city is bracing itself for war. まで繁華散って乱世の割には若死 靈動的眼裏充滿了渴望 色とりどりの花の美しさ 心の奥にその熱血わき返る川 洋洋城市風景 歳月を振り返って見てだけの黒い髪が白髪 絕處逢生 arrambneg 激情澎湃春めく 月舞寒殤