Former KGB agent says lefties in the US make it impossible to defeat terrorism. Agree or disagree?

Vietnam was my war. I was wounded as a 18 year old. I wish I did not have to say this but yes the lefties had a very big roll in us loosing the war.. But the blame for us running away was a Republican, Richard Milhouse Nixon. That is what I like about GW. He is getting it from both sides but he is staying the course in a very unpopular war.That to me means he has a backbone. He does not check the political winds to find out how they are blowing before making up his mind. He just does it , Then thinks about it.