In tonight's other news, Russia and Ukraine exchanged hundreds of prisoners today, just hours after a large-scale Russian attack on Kyiv.

At least 15 people were injured when Russia launched ballistic missiles and drones into Ukraine's capital.

The mayor said air raid sirens warned of the incoming attack, which damaged apartment buildings and a mall.

Across Ukraine, 13 people were killed in other ballistic missile attacks.

Russia later said it hit only military targets.

Hours later, the two countries exchanged hundreds of soldiers.

Each side said 300 military personnel were repatriated and that there may be another swap tomorrow.

If there is, it could make this weekend's exchanges the biggest since Russia's full-scale invasion

three years ago. There's been a major restructuring of President Trump's National Security Council

under interim national security advisor Marco Rubio, the Secretary of State.

PBS News has learned that dozens of NSC staff members have been removed from their roles,

including the Deputy National Security Advisor and the senior directors of Europe and the Middle East.

Many of the positions will not be filled.

Since its creation in 1947, the NSC has traditionally played a big role in developing a president's

diplomatic and security policies coordinating with the state and defense departments.

The U.S. measles outbreak has passed a milestone.

The CDC says that more than 1,000 confirmed cases have been reported in 31 states.

96% of the patients are either unvaccinated or their vaccination status is unknown.

Most of the confirmed cases have been in West Texas, across Texas.

728 cases have been reported.

The CDC says the MMR vaccine, which protects against measles,

is very safe and effective. And another milestone for tennis star Novak Djokovic. His victory

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