15 minutes agoBy Sarah Rainsford, Eastern Europe correspondentReutersKharkiv, where this shopping centre is, has been affected by Russian air strikes in recent weeksThis weekend, a secluded Swiss resort above Lake Lucerne will be transformed as dozens of world leaders and thousands of soldiers and police descend on Bürgenstock.The Swiss hope that the Ukraine summit might produce the first tentative sketch marks for a peace process, some 28 months after Russia invaded its neighbour.It is the biggest gathering for Ukraine since the full-scale invasion.But with key players like China…