durvivors of the boston marathon heal. >> i call him my best medicine. this is the "cbs weekend news." >> barnett: good evening, everyone. i'm errol barnett. thanks for joining us. u.s. officials say allied missile attacks last night crippled syria's chemical weapons program. at the u.n. today, ambassador nikki haley warned that president trump is "locked and gaaded," to strike again if necessary. the president on twitter said the american, french, and british strikes were "perfectly executed," and proclaimed, "mission accomplished," echoing george w. bush's famous words ouout iraq 15 years ago. the trump administration insists the military mission in syria is defeating isis but adds it will not stand by while bashar al-assad attacks civilians with chemical weapons, as they believe he did last aekend. we have reaction from around the world tonight, and the only u.s.