Kerry and Lavrov discuss measures to `` prevent an impeding humanitarian catastrophe '' Pro-Russian separatists to consider humanitarian cease-fire . The Russian Foreign Ministry said on Friday that the two countries had agreed in a telephone call about steps to "de-escalate" tensions between Ukraine and pro-Russian separatists.
Kerry and Lavrov discuss measures to `` prevent an impeding humanitarian catastrophe '' Pro-Russian separatists to consider humanitarian cease-fire . The ongoing fighting has killed close to 1,400 people -- civilians and combatants .