Russia Warns of Countermeasures if US Expands Nuclear Arsenal Beyond New START

☢️ ARMS CONTROL — Moscow's warning lands while Washington is already fighting one nuclear crisis. 📌 LOOK CLOSER: With New START suspended since 2023, Russia has no treaty obligation — this is a political signal, not a legal one. The timing matters: Washington is stretched thin on Iran's enrichment demands, and Moscow is reminding it that any US nuclear posture shift triggers a second front. It narrows Trump's options on both Iran and Russia simultaneously.