The escalating nuclear tensions between Russia and the US/NATO.
Russian Foreign Ministry spokeswoman Maria Zakharova warned that the US and NATO's aggressive policies towards the Ukraine conflict could lead to a direct clash between nuclear powers. She stated that Russia is fully aware of the seriousness of the situation and sends sobering signals to the Western countries, but the West is obsessed with anti-Russian hysteria and a total hybrid war against Russia. President Putin's recent statement about placing the first Russian nuclear warheads in Belarus and the entire batch being deployed by the end of the year has also raised concerns. US President Joe Biden has warned that the threat of Putin using tactical nuclear weapons is "real."