Russian President Vladimir Putin said on Wednesday that the murder of Kremlin critic Boris Nemtsov was a shameful tragedy that carried a political subtext.

• March 4, 2015

Thousands of Russians, many carrying red carnations, on Tuesday filed past the coffin of Boris Nemtsov, the Kremlin critic whose killing last week, friends say, showed the hazards of speaking out against Russian President Vladimir Putin.

• March 3, 2015

No normalization of ties between Ukraine and Russia is likely unless the region of Crimea, now under Russian control, is returned to Kiev's sovereignty, Ukrainian Foreign Minister Pavlo Klimkin said on Tuesday.

• March 3, 2015

Russia rebuffed Ukrainian accusations it was holding back on gas deliveries and warned that Kiev's credit would run out this week as the two sides sat down on Monday for EU-mediated energy talks in Brussels.

• March 2, 2015

Ukraine's military said on Sunday a ceasefire had been fully observed in eastern separatist territories overnight, but warned that pro-Russian rebels were using the truce to regroup for new attacks on government positions.

• March 1, 2015

Ukraine on Friday reported the first deaths in three days in east Ukraine and President Petro Poroshenko said Russia would pose a "military threat" even if a ceasefire holds.

• February 27, 2015

Bulgaria will support a new round of sanctions against Moscow if pro-Russian separatists are found to have breached a peace deal agreed for eastern Ukraine, Foreign Minister Daniel Mitov told Reuters on Friday.

• February 27, 2015

Ukraine has sent a small prepayment of $15 million to Russia for March natural gas deliveries, energy officials from the two sides said on Friday, after Moscow threatened to cut off supply.

• February 27, 2015