Uh, advising a country to not defend themselves is an option? Only for the Obama administration, apparently. From the Free Beacon:
The Obama administration advised the Ukrainian government not to fight Russian forces when Vladimir Putin invaded Crimea in 2014, the main reason for which was a desire not to anger the Russian president.
Bloomberg reported that, according to U.S. officials, the Obama White House believed pushback from Ukraine would move Putin to launch a larger military campaign against the country, similar to what Russia did in Georgia in 2008.