Ahmad Mughassil, a Saudi member of Hezbollah, was reportedly detained in Beirut and handed over to authorities in Saudi Arabia, but details remain fuzzy. A US court indictment named him as the architect of the 1996 Khobar Towers attack.
Syria and its ally Iran are negotiating with rebels over a population swap: Sunnis would leave a town sought for an evolving Assad regime enclave in return for the transfer of besieged Shiite communities.
The US and Turkey have designated a zone in northern Syria for flushing out Islamic State. Jordan is also considering a similar zone in southern Syria, as President Bashar al-Assad is forced to pull back his forces.
Hezbollah fighters fired antitank missiles at a convoy, killing two Israeli soldiers. The much-anticipated reply to an Israeli strike 10 days before showed the challenge both sides face: retaliation without escalation.
An Israeli raid over the weekend led to the highest number of Hezbollah deaths since a 2006 month-long war between the two. Hezbollah will now have to carefully weigh its desire to inflict a punishing message without escalating the situation further.