Well over 1,000 Russian troops are operating inside Ukraine, marking a significant escalation of Moscow's military involvement in the country, NATO said on Thursday.

• August 28, 2014

French President Francois Hollande said on Thursday it would be "intolerable and unacceptable" if it were proven that Russian troops had entered Ukrainian territory, warning that a further escalation would lead to more sanctions.

• August 28, 2014

Ukraine accused Russia of launching a new military incursion across its eastern border on Wednesday, as hopes quickly faded that Tuesday's talks between their two presidents might mark a turning point in a five-month-old crisis.

• August 27, 2014

On Monday, a resident of Novoazovsk in south-eastern Ukraine said she saw a column of armored vehicles approach the town and start shooting.

• August 26, 2014

Russian President Vladimir Putin said on Tuesday the crisis in Ukraine could not be solved by a further military escalation or without dialogue with representatives of the country's Russian-speaking eastern regions.

• August 26, 2014

Ukraine accused Russia on Monday of sending soldiers across the border to open a new front in the separatist war that has devastated the east of the country and provoked the gravest East-West crisis since the fall of communism.

• August 25, 2014

Forces from the Libyan city of Misrata on Saturday seized Tripoli's main airport after more than a month of fighting with a rival group, a Misrata spokesman said.

• August 23, 2014

Israel killed three senior Hamas commanders in an air strike on the Gaza Strip on Thursday, the clearest signal yet that Israel is intent on eliminating the group's military leadership after a failed attempt on the life of its top commander this week.

• August 21, 2014