What are Tomahawk missiles and why does Ukraine want them?

Ukraine could receive Tomahawk cruise missiles from the U.S. for deep strikes into Russia, a prospect Russia said Monday (September 29) its military is analyzing and warns could sharply escalate the conflict. This comes after U.S. Vice President JD Vance said Sunday (September 28) that the U.S. is considering Ukraine's request for long-range Tomahawk missiles to counter Russia. Syakir Jasnee explains.