Russian President Vladimir Putin talks during a National Youth Forum meetin in the Tver Region, Russia, yesterday. EPA/Mikhail Klimentiev

Ukrainian forces battle pro-Moscow rebels as PM hints at possible bid for Nato membership

A burnt trolley bus lies on a square near a railway station in Donetsk, eastern Ukraine yesterday. Reuters/Maxim Shemetov

Putin insists Kiev must negotiate with rebels in east, not with Russia

A pro-Russian separatist walks past an unexploded rocket in a village 26 miles from Donetsk. Photograph: Mauricio Lima/New York Times.

EU and US eye more sanctions as rebels say ‘holidaying’ Russian soldiers are fighting with them

Pro-Russian separatists walk towards a destroyed war memorial at Savur-Mohyla, a hill east of the city of Donetsk yesterday. Photograph: Maxim Shemetov/Reuters

Months of weakness and disunity among Ukraine’s allies have left it exposed to Kremlin aggression

 Local residents donate blood at a blood donation station in Donetsk, Ukraine, on Wednesday. Hundreds of civilians and military injured in the fighting in the South-East of Ukraine are in local hospitals with not enough blood for medical operations. Photograph: Sergei Ilnitsky/EPA

Pro-Moscow rebels push back Kiev’s forces as Russia’s secret death toll appears to mount

Damaged goods lie in a damaged kitchen in downtown Donetsk. Photograph: Sergei Ilnitsky/EPA

US and Germany believe incursions indicate counter-offensive directed by Russia

Russian president Vladimir Putin and Ukrainian president Petro Poroshenko shake hands during a summit of Eurasian world leaders in Minsk, Belarus, yesterday. Photograph: Sergei Bondarenko

Ukraine leader conducts talks with Russian counterpart in Belarus

Patients and relatives gather in a hospital basement after an early-morning shelling that hit the hospital compound in central Donetsk, Ukraine. Photograph: Mauricio Lima/The New York Times

Putin and Poroshenko set for talks with EU officials as Moscow plans second convoy to Ukraine

 Russian convoy trucks arrive at the  Ukrainian border drive in the Rostov region yesterday as  a woman awaits her son who has fled from fighting in eastern Ukraine. Photograph: Reuters/Alexander Demianchuk

Timing of convoy deployment suggests crisis has reached a vital stage

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