There were no restrictions on MIRV’s, this is why the U.S was concentrating on creating these vehicles. This gave them a lead in the number of warheads. Strategic bombs and bombers weren’t limited and the U.S. again took this as an advantage and took a lead over Soviet Union in range bombers.
Anti Ball Missiles was limited around Moscow and the U.S didn’t have a thin ABM defence they used them at 2 ICBM sites to protect themselves.
During the Mid 70s the Helsinki Agreements occurred. It was seen as a step towards reducing Cold War tensions and hopefully for the Soviet Union the rules on Nation borders would change. Europe. The Helsinki agreements recognised Soviet control over Eastern Europe because it dictated confrontation and expansion abroad. Russia promised to respect human rights but Brezhnev didn’t have the intentions for honouring the human rights but the U.S needed Détente to occur because they believed the Soviet Union was strong and going to get stronger. During these agreement SS20s were being targeted at Western Europe
Salt II lasted from 1972 to 1979. It was a progression from Salt I trying to provide limits on weapon systems and to put restraints on future developments.
MIRV systems were finally limited for both the U.S and Soviet Union. There was a ban on new construction of new land based ICBM launchers so they couldn’t be another threat for the future.
Neither Russia nor America kept to the SALT1 agreement. The restraints didn’t improve the situation because many of them may have stopped them of using and start a nuclear war but they didn’t stop the production of these powerful weapons. Neither side reduced their weapons.
The Helsinki Agreement didn’t achieve much, it confirmed the Iron Curtain and Russia did not honour the human rights. Further talks were less successful and a SALT2 Treaty in 1979 added little because it was not ratified so neither of the sides had to follow the rules.
Detente means relaxing or easing. Détente was a permanent relaxation in international affairs during the rather than just a temporary relaxation. The horrors of shocked people and there was a growing fear of a nuclear holocaust especially with the growth in those countries that had. Also both USA and USSR had huge stockpiles of weapons. This is why Détente occurred. It is very important.