Complex sentence: Between 1995 and 1998, he was British ambassador to Israel; from 2001, he was a foreign policy adviser to British Prime Minister Tony Blair, who selected him to replace Christopher Meyer as the British Ambassador to the United States.
Split into simpler sentences: Between 1995 and 1998, he was British ambassador to Israel; from 2001, he was a foreign policy adviser to British Prime Minister Tony Blair. Blair selected him to replace Christopher Meyer as the British Ambassador to the United States.