Moreover, Mr. Obama - again with GOP help - succeeded in getting don't ask, don't tell (DADT) repealed, enabling homosexuals to serve openly in the military. This is one of the most revolutionary and damaging acts ever done to a core American institution. It will decimate the greatest fighting force on earth, undermining unit cohesion, morale and discipline - the lifeblood of a successful military. It is an act of national suicide.