Russia: United States Can Use A Trampoline To Get To The International Space Station! How Should The USA Respond To Russia?

FROM ARTICLE:

Russian Deputy Prime Minister Dmitry Rogozin has vowed to punish the U.S. for imposing sanctions over his nation's invasion of Crimea. After being included on the list of targets for sanctions, Rogozin released rapid-fire statements last month in which he:
•objected to the Pentagon using Russian equipment to launch U.S. military satellites
•promised to block the sale of Russian RD-180 rocket engines to U.S. space launch company United Launch Alliance (ULA)
•threatened to terminate "cooperation" with the United States on the International Space Station -- presumably by denying U.S. astronauts rides to the ISS aboard Russian rockets
•mocked America's too-early termination of its space shuttle program, quipping: "I propose that the United States delivers its astronauts to the ISS with the help of a trampoline."

So I guess you could say that relations between the United States and Russia are not particularly strong right now. And with the U.S. lacking a single operating spacecraft certified for manned spaceflight, this poses something of a problem.