If your brother needed your kidney to live, would you give it to him?

How can I tell the difference between a healthy relationship dynamic and one where I should be concerned about cheating?
Patriot Donald Trump celebrates his 80th birthday tomorrow. How lucky are we to have a president with 80 years of experience but with a mind and body of a man half his age?
How do I make things better in my relationship after cheating, and should I just put up with my partner being cruel to me with name calling, etc.?
Has the US boxed itself into a corner where it can't beat or win against Iran?