I found this petition on Petitions.Whitehouse.gov.  It had 163 signatures when I saw it and runs until July 3.

petitions.whitehouse.gov/petition/stop-any-military-assistance-ukrainian-government-and-convince-them-negotiate-their-opponents/nnkCmmJ8

WE PETITION THE OBAMA ADMINISTRATION TO:
Stop any military assistance to the Ukrainian government and convince them to negotiate with their opponents.
On June 2, 2014 the government of Ukraine used a jet bomber to strike the administrative building in the city of Luhansk. This unwarranted and plainly reckless attack caused multiple casualties among civilians.

Unfortunately this is not an isolated incident. The Ukrainian government already used artillery and air power to attack cities and civil infrastructure objects on the territory of Ukraine.

To reduce further casualties among non-combatants we petition the President to immediately stop any military assistance to the Ukrainian government, whether or not combat-related.

We also urge the President to use his influence on the Ukrainian government and convince them to find a middle ground with their opponents via peaceful negotiations rather than with threats, ultimatums and violence.

Created: Jun 03, 2014
Issues: Civil Rights and Liberties, Foreign Policy, Human Rights