Beijing calls new alliance between Washington, Canberra, and London an 'extremely irresponsible' threat to regional stability

Russian leader gives orders for 2 subs armed with intercontinental ballistic missiles at arms show designed to showcase Moscow's military might and attract foreign customers

Vessel said to have surfaced and faced Persian Gulf, in show of force amid threats over killing of nuclear scientist; in similar move, US sub crosses Straight of Hormuz

Blaze broke out in vessel's battery compartment on Monday; officials had previously refused comment on incident