`` Regarding sanctions , we have said that we want to give Russia the opportunity to pursue de-escalation , '' NSC spokeswoman Laura Lucas Magnuson said in the statement . NATO releases images of tank presence near Russia 's border with Ukraine . Security service says a homemade bomb was left outside gate of president 's offices . Three Ukrainian soldiers died in attack by separatists . Ukraine 's President vows punishment for the shootdown .
NATO releases images of tank presence near Russia 's border with Ukraine . Security service says a homemade bomb was left outside gate of president 's offices . Three Ukrainian soldiers died in attack by separatists . Ukraine 's President vows punishment for the shootdown .