US President Barack Obama said no decision had been made on whether to send weapons to Ukraine to help Kiev battle pro-Russian separatists.
Russian President Vladimir Putin said the conflict in Ukraine will continue if rival groups there do not agree among themselves.
Kazakhstan’s peacekeeping battalions will conduct the Steppe Eagle 2015 exercise near Almaty together with US armed forces.
US senators from both parties renewed calls Thursday for President Barack Obama to boost military aid to Ukraine.
NATO defence ministers agreed to immediately set up six bases in eastern Europe and establish a spearhead force of 5,000 troops in response to Russian aggression.
Residents of the Tekstylnyk district in east Ukraine rebel stronghold Donetsk have only tears and unanswered questions after a barrage of shells killed four people.
Greece's new government remains committed to its NATO role despite close ties with Russia that have worried its allies.
Ukraine President Petro Poroshenko said he has "no doubt" the US will provide weapons for the fight against pro-Russian separatists.
Germany will not provide Ukraine with weapons to fight Russian-backed rebels in the east, Chancellor Angela Merkel said.
Battles raged between government forces and pro-Russian rebels for control of a strategic transport hub as the death toll mounted in east Ukraine.
NATO's military commander and Obama administration officials appear to be moving toward supporting sending defensive weapons to Kiev.
Hezbollah chief Hassan Nasrallah said his Shiite militant group is not seeking confrontation with Israel.
President Barack Obama plans to ask for an increase in military spending in a proposed budget for 2016.
About 1,100 children are living rough in underground shelters in Ukraine's rebel-held eastern city of Donetsk.
Visiting NATO chief Jens Stoltenberg warned authorities in mainly Muslim Kosovo of the danger posed by foreign fighters returning from Syria and Iraq.
Kazakhstan’s army has been ranked 80th in the updated Global Firepower Index.
Ukrainian forces ceded a long-disputed airport to Russian-backed rebels as an upsurge in clashes killed nearly 50 people.
Russia's latest actions in Ukraine are clear evidence that President Vladimir Putin is pursuing an "occupation plan" of Moscow's neighbor.
NATO head Jens Stoltenberg said Russia had recently increased the flow of heavy arms and equipment into eastern Ukraine.
Ukraine accused Russian forces of attacking its soldiers fighting pro-Kremlin insurgents in the ex-Soviet republic's separatist east.