I spoke in the House of Lords debate on Syria and the Middle East on 1st July at cols 107 – 109 of Hansard. What I heard and said then convinced me that we need détente just as much now as during the worst times of the 20th century Cold War.
An obvious example is between India and Pakistan, both of whom are nuclear powers. Trade between them could be greatly increased which would help indirectly the poorest people in both countries.
Iran and Western and Arab States are another. For hundreds of years Iran has never attacked its neighbour though it suffered a terrible onslaught by Saddam Hussein. The new Iranian President and the release of some prisoners give grounds for restoring at least basic diplomatic relations between Britain and Iran.
Israel and Palestine are perhaps the most obvious cases. Because of the Wall and barrier, together with occupation of most of the West Bank and the blockade of Gaza, normal person to person contacts are almost impossible. This has led to fear, mistrust, and demonization of the other. Even when official relations are poor, everything possible should be done to multiply cultural, school, academic and sporting occasions.