Southeastern city of mariupol. russian soldiers and military hardware are pouring into eastern ukraine and ramping up its ground assault along the 300-mile-long front line. now, despite this ground assault thr front, russis not anyni vances a fierce ukrainian resistance. a senior u.s. defense official telling cbs news that the first of 18 howitzers have arrived in europe and are en route to ukraine where it s badly needed to repel the russian attack. moscow took the provocative move of test launching a new type of intercontinental ballistic missile, that s designed to evade defenses. and in some of the strongest criticisms yet from a russian oligarch, oleg tinkov today denounced moscow s massacre in ukraine and called for the end of this crazy war. we have a lot of news to get to today, and cbs chris livesay will start us off from kyiv. good evening, chris. reporter: good evening, norah. tonight, ukrainian president volodymyr zelenskyy is warning of a massive attack in the east