The United States and China held talks on nuclear arms control, marking the first meeting on this issue since the Obama administration. The talks aim to ease mistrust between the two countries ahead of an expected presidential summit. The US has expressed concern over China's growing nuclear arsenal. While no breakthroughs were expected, the talks are seen as a way to manage the relationship and prevent conflict. China currently has over 500 operational nuclear warheads, with estimates suggesting they could have over 1,000 by 2030. The US has around 3,700 nuclear warheads.