Projected U.S. presidential election winner Joe Biden will meet with the U.S. national security experts on Tuesday in Wilmington, Delaware, to discuss key issues related to security, according to media reports quoting Biden's team. 

Diplomatic, intelligence and defense advisers will brief Biden as well as Kamala Harris.  

An earlier report from Reuters noted that Biden has tapped finance, trade and banking regulation experts for his transition team that ranges from core Democrats to progressive activists, reflecting ongoing debate within the party about how to address climate change, wealth inequality and other issues.  

Meanwhile, he will further lay the groundwork for his new administration as incumbent President Donald Trump pursues a flurry of lawsuits challenging the election results in an effort to cling to power.

Judges so far have tossed out lawsuits brought by Trump's campaign in Michigan and Georgia, and legal experts say the litigation has little chance of changing the outcome of the November 3 election.