http://www.msn.com/en-us/news/world/us-warns-putin-before-ukraine-talks/ar-AA9eLu4
However, there was intense fighting in eastern Ukraine ahead of the talks.
On Tuesday, four soldiers and at least eight civilians were killed in rocket attacks on a key military base and a residential area in Kramatorsk.
Government officials said the rockets were fired from a rebel-held area, but separatists denied being behind the attack.
More than 5,400 people have died since the conflict began and civilian casualties have risen in recent weeks.
However, there was intense fighting in eastern Ukraine ahead of the talks.
On Tuesday, four soldiers and at least eight civilians were killed in rocket attacks on a key military base and a residential area in Kramatorsk.
Government officials said the rockets were fired from a rebel-held area, but separatists denied being behind the attack.
More than 5,400 people have died since the conflict began and civilian casualties have risen in recent weeks.