NEW : Analyst says European allies must join U.S. in sanctions effort . The United States and Europe have been at odds over the past several months about how to respond to Russia's actions in Ukraine. Loan guarantees . $ 1 billion aid package announced as U.S. considers sanctions against Russia . Secretary Kerry says Russia tries to create a false pretext to further invade Ukraine .
NEW : Analyst says European allies must join U.S. in sanctions effort . The United States and Europe have been at odds over the past several months about how to respond to Russia's actions in Ukraine. $ 1 billion aid package announced as U.S. considers sanctions against Russia . Secretary Kerry says Russia tries to create a false pretext to further invade Ukraine .