10:32 US doesn't know if Russia is 'serious' about Ukraine peace: Rubio
10:25 US doesn't want to separate from Europe 'but revitalise alliance': Rubio
10:18 Rubio says UN playing 'no role' in resolving conflicts
10:18 US wants Europe to be 'strong': Rubio
10:13 US and Europe 'belong together': Rubio