President Joe Biden declared it is "vital for America's national security" for Israel and Ukraine to succeed in their wars.He made the case on Thursday night for deepening US involvement in two foreign conflicts as he prepared to ask for billions of dollars in military assistance for both countries.In a rare televised Oval Office address, Mr Biden said "conflict and chaos could spread in other parts of the world" if international aggression is allowed to continue.

President Joe Biden declared it is "vital for America's national security" for Israel and Ukraine to succeed in their wars.He made the case on Thursday night for deepening US involvement in two foreign conflicts as he prepared to ask for billions of dollars in military assistance for both countries.In a rare televised Oval Office address, Mr Biden said "conflict and chaos could spread in other parts of the world" if international aggression is allowed to continue.