The Republican establishment appears to have settled on Marco Rubio as the last great hope to save the Republican Party, or at least the elites which dominate the GOP, from Donald Trump. Alas, while the Donald's shortcomings are manifest, Rubio's foreign policy judgment is awful. If you want more foolish, costly, and unnecessary wars, vote for Rubio.
After underestimating Donald Trump's candidacy, virtually the entire political class is scrambling to stop the billionaire businessman. No one knows what he would do as president on most issues since he exhibits no fixed philosophy and seamlessly shifts his positions.
However, the relevant question is Donald Trump compared to whom? On at least one important dimension the Florida senator would be a far worse president than Trump. Despite making blowhard claims about being the campaign's most militaristic candidate, Trump is not disposed to get America into another foreign conflict.