Today is Monday, April 11, the 102nd day of 2016. There are 264 days left in the year.

Today’s birthdays: Ethel Kennedy is 88. Actor Joel Grey is 84. Actress Louise Lasser is 77. Pulitzer Prize-winning columnist Ellen Goodman is 75. Actor Peter Riegert is 69. Actor Bill Irwin is 66. Singer-songwriter Jim Lauderdale is 59.

In 1921, Iowa became the first state to impose a cigarette tax, at 2 cents a package.

In 1945, during World War II, American soldiers liberated the Nazi concentration camp Buchenwald in Germany.

In 1951, President Truman relieved General Douglas MacArthur of his commands in the Far East.

In 1965, dozens of tornadoes raked six Midwestern states on Palm Sunday, killing 271 people.

In 1966, Frank Sinatra recorded the song ‘‘Strangers in the Night’’ for his label, Reprise Records.

In 1970, Apollo 13, with astronauts James A. Lovell, Fred W. Haise, and Jack Swigert, blasted off on its ill-fated mission to the moon.

In 1979, Idi Amin was deposed as president of Uganda as rebels and exiles backed by Tanzanian forces seized control.

In 2006, Iranian President Mahmoud Ahmadinejad announced that his country had succeeded in enriching uranium.

Last year, President Obama and President Raoul Castro of Cuba gathered on the sidelines of the Summit of the Americas in Panama City in the first formal meeting of the two countries’ leaders in a half-century.