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Jackie Northam

The U.S. killing of a top Iranian military leader, Qassem Soleimani, in an airstrike in Baghdad this week has raised thorny legal questions. Experts disagree over whether the U.S. had the legal authority to launch the deadly strike.

President Trump stated that Soleimani was plotting "imminent and sinister attacks on American diplomats and American personnel, but we caught him in the act and terminated him."

Lisa Hywood remembers the first time she ever set eyes on a pangolin. It was in 1994, and she had just founded the Tikki Hywood Trust, a wildlife conservation sanctuary in Zimbabwe. One morning, someone dropped off a strange-looking, injured creature that had been confiscated from an illegal trader.

"This animal arrived in a sack and smelling something horrendous," she recalls. "And I looked at this animal and I thought it's like no other mammal that I've ever encountered."

The U.S. Justice Department is asking a federal judge to put on hold his ruling that temporarily blocks President Obama's executive action that would protect more than 4 million people in this country illegally from the threat of deportation.

In its motion to stay, the Justice Department said U.S. District Judge Andrew Hanen "lacked authority to issue the preliminary injunction."

Justice Department officials also filed an appeal of Hanen's decision and asked that the executive action move forward while the appeals process is underway.