Thousands of pagers and other devices exploding in Lebanon this week mark a new and deadly escalation in the use of supply chains against adversaries, giving new urgency to global leaders’ drive to reduce their dependence on technologies from rivals.

Ramzan Kadyrov, the notorious head of Russia’s Chechnya region, accused Elon Musk of remotely disabling a Tesla Inc. Cybertruck that he said had been used in Russia’s war against Ukraine.

Deutsche Lufthansa AG is reviewing whether to cut its daily flight from Frankfurt to Beijing, citing its inability to compete with Gulf airlines that are free to travel through Russian air space.