he said it came from kata'ib hezbollah itself.uding tahseen ousamma, whose funeral lodya remon was going to when she was attacked. her friend abbas, who was driving, was also on the list. >> (speaking arabic): ♪ ♪ >> narrator: coming up next on this special edition of ext on frontline... >> they've lost their homes in the war. >> the one thing that that man was terrified of was that he'd doesn't know who is going to feed his children. >> narrator: an exclusive look inside a country ravaged by war, and the pandemic. yemen's covid cover-up, begins right now. ♪ ♪ (bustling market sounds) >> nawal al-maghafi: this is sanaa, the capital of yemen. it's april 2020, and covid is raging around the world, but here the city markets are still full of people. >> (speaking arabic): >> al-maghafi: when this was filmed, other countries were already under lockdown. >> (conversing in arabic): >> al-maghafi: they're selling qat, a stimulant. chewing the leaves is a national addiction. >> (speaking arabic): >> al-maghafi: the city seems to be in deni

the militia targeted including kata'ib. hezbollah, the u.s. says. the group, calling itself the guardians of blood brigade, had claimed responsibility for last week's attack. days later, another attack in iraq's green zone appeared to target the u.s. embassy in baghdad. iran has denied any links to the group, but the air strikes could complicate the biden administration's efforts to return to a nuclear deal with iran. >> we encouraged the iraqis to investigate and develop intelligence, and that was helpful to us in refining the target. >> reporter: it is a proportionate response, the pentagon says, sending an unambiguous message. president biden will act to protect american personnel. and delicate diplomacy will have been involved. a limited strike inside syria to avoid a backlash from iraq, while sending a message to iran. russia says it was given several minutes of warning, savannah. >> keir, thank you. we want to bring in chief white house correspondent kristen welker. what more do you know about the thinking and the strategy behind these strikes