Ukraine vows to bring peace to east

Ukrainian forces will continue their offensive against rebels until peace and order are restored in the east, the interim defence minister has said.
Fighting has intensified around Sloviansk and 12 Ukrainian troops were killed on Thursday when pro-Russian rebels shot down an army helicopter.
Dozens of separatists died on Monday in a battle at Donetsk airport.
Russia has again called for Ukraine to stop its military campaign against the pro-Moscow rebels.
Interim Defence Minister Mykhailo Koval told reporters Ukrainian forces would continue operations in border areas "until these regions begin to live normally, until there is peace."
And he again accused Russia of backing the rebels - a claim Moscow denies, according to BBC.