You can gain in your effectiveness as a politician from a wide acquaintance with the world and from a degree of independence that having some outside interests gives.
It's really necessary for the United States to continue to give strong leadership to the Middle East peace process, supported by European countries at the same time.
The people of Britain want a Home Secretary who will give them back their streets. They want a Home Secretary who will speak up for the victim, not the criminal.
It makes life very simple actually. You could be giving a TV interview in howling gale and it no longer matters.