There's been a 'reminder' that war is becoming 'more and more likely every single day'

Liberal Senator Jim Molan says there has been "a reminder" that war is just not possible but is in fact "becoming more and more likely every single day".

"We've just seen the most appalling threats made by China towards Japan that they will use nuclear weapons against them," Mr Molan told Sky News host Paul Murray.

"They've made similar threats to us," he said.

Mr Molan also discussed the fact that a second Chinese spy ship has been sent to watch Australian and US military exercises off the coast of Queensland.