18:00Six O'Clock NewsG20 warning about BrexitBBC Radio 4 Duration: 15 minutes Sat 27th Feb 2016, 18:00 on BBC Radio 4 LWAvailable for over a yearListen nowThe latest national andG20 leaders warn of shock to global economy of "Brexit"Russia halts Syria air-strikes international news from BBC Radio 4.GenresNewsFormatsBulletinsBrandSix O'Clock News Source: BBC Online