What to know this morning: In 5 minutes or less

1. ISIS has claimed responsibility for the Texas attack at a cartoon exhibit where artists were drawing the Prophet Muhammad. This is the first time ISIS has claimed responsibility for an attack in the United States. Read more here.

2. Jurors just saw a new video in the Colorado 'Dark Knight' shooting trial, where the suspect asked police if any children were hurt. Read more here.

3. Last night was the 2015 Met Gala, themed "China: Through the Looking Glass" and Fashion's Biggest Night had a red carpet filled with many of Hollywood's biggest names. Click through below to see all the looks from last night, and see our picks for the best and worst dressed here.

4. We have another candidate, ladies and gentleman. Mike Huckabee, who is set to announce his second bid for the White House this morning at 11 am, believes he is the best candidate to take on the Democratic favorite, Hillary Clinton. Read more here.

5. Happy Cinco de Mayo! Celebrate today with these 10 ways to make your guacamole even better.

6. In case you missed it, the royal baby officially has a name! Britain's newest Princess is named Charlotte Elizabeth Diana, after her grandfather, great-grandmother, and late grandmother. How sweet! Read more about the Princess of Cambridge here, and see photos below.

7. New light has been shed on the tragic death of CEO of Survey Monkey David Goldberg, husband of Facebook's Sheryl Sandberg. Goldberg reportedly died of severe head trauma, after falling at a gym in a Mexican resort. Read more here.