European Union leaders holding a crisis meeting on Ukraine on Thursday could impose sanctions on Russia if there has been no “de-escalation” by then, French Foreign Minister Laurent Fabius said.

In a show of U.S. support for Ukraine’s new leadership, Secretary of State John Kerry walked the streets of Kiev on Tuesday and promised the crowds that American aid is on the way.

Ukrainian Foreign Minister Andriy Deshchytsia sounded a conciliatory tone towards Russia, saying he wanted to resolve their impasse “peacefully.”