The first cases related to the Parkland school shooting in February are beginning to work through the courts, testing a number of thorny legal issues.

In the last week, for example, judges in different courts ruled on questions about what duty school deputy Scot Peterson had to protect the students at Marjory Stoneman Douglas High School during the attack there in February.

Updated at 4:20 p.m. ET

Penny Marshall, who became a household name as Laverne in the TV sitcom Laverne & Shirley and went on to direct several popular movies, has died at the age of 75.

Marshall died Monday night at her Los Angeles home from complications of diabetes, family publicist Michelle Bega tells NPR.

Updated at 7:25 p.m. ET

A federal judge delayed sentencing former national security adviser Michael Flynn on Tuesday after he pleaded guilty to lying to investigators about his talks with Russia's ambassador.

U.S. District Judge Emmet Sullivan said he has significant outstanding questions about the case, including how the government's Russia investigation was impeded and the material impact of Flynn's lies on the special counsel's inquiry.

Not so long ago, staging another Brexit referendum in the United Kingdom seemed almost unthinkable. But in recent weeks, as calls have grown louder, the unthinkable has begun to seem plausible.

Last week, former Prime Minister Tony Blair said because of the current political chaos and future economic risks, the British should have another say on whether to leave the European Union if there are no other viable options.

The Trump administration is banning bump stocks, the firearm attachment that allows a semiautomatic weapon to shoot almost as fast as a machine gun.

The devices, also known as slide fires, came under intense scrutiny after they were used by the gunman who opened fire on a country music concert in Las Vegas last year, killing 58 people.

The massacre touched off a public outcry, including from some lawmakers, for the accessories to be banned.

Updated at 1:15 p.m. ET

New York Attorney General Barbara Underwood has announced that the Trump Foundation will dissolve. The foundation was established by Donald Trump well before he ran for president.

U.S. military operations in space are back under a single unified command after President Trump ordered the Defense Department on Tuesday to revive the once-retired U.S. Space Command. Vice President Pence outlined the plan during a visit to Florida's Kennedy Space Center.

Updated at 11:27 a.m. ET

Arizona Gov. Doug Ducey announced Tuesday he will appoint GOP Rep. Martha McSally to the Senate to fill the seat of the late Sen. John McCain.

The move comes after Republican Sen. Jon Kyl, who had been a temporary replacement after McCain's death in August, announced last week he would step down at the end of the year.