Last week President Trump released his Nuclear Posture Review, the first update to the vital strategic document since President Obama's in 2010. What will it mean for the U.S. nuclear arsenal and its role in confronting today's global threats?

Four experts weigh in:

• Richard Haass, president of the Council on Foreign Relations: Unresolved nuclear debates rekindled
• Ivo Daalder, president of the Chicago Council on Global Affairs: Key Obama commitment retained
• Rebecca Hersman, director of the Project on Nuclear Issues at CSIS: New global threats addressed
• Frank O'Donnell, nuclear security fellow at Harvard's Belfer Center: Chain reaction risked in Asia

It's our first Thanksgiving here at Axios, a fine occasion in its own right to raise a glass and polish off a few plates of food. The big meal seemed like a good time to invite helping hands into the kitchen, so we asked a group of chefs and food writers for their favorite holiday tips.

The culinary experts:

• Alison Roman, food writer and recipe developer: A host's guide to staying sane
• Michelle Lopez, baker: Thanksgiving with a global twist
• David Lebovitz, cook and pastry chef: A secret sauce in seconds
• Bill Yosses, former White House pastry chef: A prep essential for every dish
• Aaron Silverman, chef and restaurateur: How the French do mashed potatoes

At last month's meeting of the National Space Council, Vice President Mike Pence announced plans for the next stages of U.S. space exploration. "We will return American astronauts to the Moon, not only to leave behind footprints and flags, but to build the foundation we need to send Americans to Mars and beyond," he said.

We asked four experts what we might learn by sending astronauts back to the Moon.