The presumptive Democratic nominee Joe Biden has named former rival, senator Kamala Harris as his vice-presidential running mate.

It is a historic choice as if elected, the California senator would be the nation's first female, first black and first Asian American vice president.

Harris, who ran against Biden for the presidential nomination, is a daughter of immigrants from India and Jamaica. She is the first black and the first Asian American woman to be nominated by a majority party.

Kamala Harris is one of "the country's finest public servants," Biden said in a series of tweets on Tuesday.

Harris has extensive experience

President Trump has refused to condemn Russia over the poisoning of Putin's opponent Alexey Navalny, saying that Washington had not yet seen any proof.

According to the US President, what has happened to Navalny is ''tragic,'' and we should look at it ''very seriously.''

Trump also opined that everyone is always mentioning Russia, but in his view, China is a nation that we should be talking about much more than Russia.

Earlier this week, German chancellor, Angela Merkel, revealed test results conducted at a military laboratory, proving that the Kremlin critic had been poisoned with a nerve agent called Novichok. In her words,