Ukraine would clearly find it difficult to trust Russia however it has several reasons for doing so. The first is that Russia and Ukraine "for decades had warm and friendly relations" to which they can return if they sign an agreement. Second Ukraine has little choice; it does not have the military strength to oppose Russia. Finally the United States and other countries could be a part of the agreement providing formal guarantees which would provide much more guarantee of action to help Crimea in the event of a repeat situation in the future.