TERRORISM

Domestic terrorism poses "elevated threat" to the U.S. U.S. intelligence agencies believe domestic terrorism poses an "elevated threat" to the homeland in 2021, and further violence is possible. CBS News senior investigative correspondent Catherine Herridge joins CBSN's Elaine Quijano to discuss what new information we've this report reveals, including possible collaboration between domestic and overseas extremist groups.

New York Mets starting pitcher Jacob deGrom throws during a simulated game at a baseball workout at Citi Field, Sunday, July 5, 2020, in New York. (AP Photo/Seth Wenig)

New York Mets starting pitcher Jacob deGrom throws during a simulated game at a baseball workout at Citi Field, Sunday, July 5, 2020, in New York. (AP Photo/Seth Wenig)NEW YORK The New York Mets will host the crosstown Yankees on the 20th anniversary of 9/11 next season, according to a person familiar with the decision. The clubs will play at Citi Field in a game sure to be full of emotions for the city that's also reported over 18,000 confirmed coronavirus deaths this year. I cant imagine how powerful and how emotional of an event that could be," Yankees manager Aaron Boone said. It'll be a homecoming of sorts for former Yankees manager Joe Girardi, who was hired as Phillies manager over the offseason.

A man involved in a December shooting that killed three and injured eight at Naval Air Station Pensacola had clear ties to terrorism, authorities announced Monday. We followed that very closely, said U.S. Rep. Ted Yoho, who represents Floridas 3rd Congressional District, of the Pensacola shooting. When that happened, it was pretty much self-evident: This is definitely a terrorist attack on our shores. Yoho, a member of the House Committee on Foreign Affairs, said the news is not surprising to him. Alshamrani, who was a member of the Royal Saudi Air Force, had been training at Naval Air Station Pensacola and was killed by law enforcement during the attack.

Police in Munich say terrorism is a likely reason for the attack on a shopping mall in Munich. Seamus Hughes, with George Washington University's Center for Cyber and Homeland Security, joins CBSN

A mass shooting at a Florida nightclub has left at least 50 casualties. Police say the terror suspect may have had ties to Islamic terrorism. CBS News senior national security analyst Juan Zarate joins CBSN with the latest details.

There is no evidence yet of terrorism in the Russian airline crash in Egypt. However, investigator aren't ruling out ISIS involvement. CBS News national security correspondent David Martin joins CBSN to discuss.