Jon Lieber, head of Eurasia Group's coverage of political and policy developments in Washington, DC shares his perspective on US politics:

What are the implications of the death of US Senator Dianne Feinstein?

Senator Dianne Feinstein died this week at age 90. She was the longest serving female senator in history and a former mayor of San Francisco who was a trailblazer for women in politics in the United States. She had been sick for a little while, leading to calls from fellow Democrats for her to step down from her seat and allow somebody younger to take over both the Senate seat from California and her coveted seat on the Senate Judiciary Committee.