(You can also get "5 Things You Need to Know Today" delivered to your inbox daily. Iowa caucusesJUST WATCHED This is why Pete Buttigieg did well in Iowa Replay More Videos ... MUST WATCH This is why Pete Buttigieg did well in Iowa 01:443. CoronavirusJUST WATCHED Passengers test positive for coronavirus on cruise ship Replay More Videos ... MUST WATCH Passengers test positive for coronavirus on cruise ship 01:204. JUST WATCHED Mexico's battle to combat cartel violence Replay More Videos ... MUST WATCH Mexico's battle to combat cartel violence 01:475. These "low-yield" nuclear weapons are less powerful than typical nuclear warheads but are easier to transport and deploy.

Source: CNN February 05, 2020 11:03 UTC