Why were Nixon and Brezhnev unlikely candidates to be involved in the SALT discussions?

Nixon and Brezhnev were unlikely candidates for SALT discussions due to their contrasting political ideologies and historical contexts. Nixon, representing a capitalist democracy, was initially skeptical about arms control, while Brezhnev, as a leader of the Soviet Union, was committed to communist principles and viewed the arms race as essential for national security. Additionally, both leaders faced domestic pressures that made cooperation on arms control a complex and contentious issue. Despite these challenges, their mutual interest in reducing tensions ultimately led to their involvement in the Strategic Arms Limitation Talks.