with my entire being. it is nearly 70 years since queen elizabeth first met a serving us president — that was harry s truman — and on sunday she added to her list as she welcomed joe biden for afternoon tea at windsor castle. he'd travelled from the g7 summit in cornwall — as our royal correspondent, nicholas witchell, reports. dropping in for tea. how very british. president biden�*s helicopter brought him to a windsor castle geared up for a vip visit. stand still! in the quadrangle, the grenadier guards were being bawled at by their sergeant major. he shouts orders once he was happy, the queen emerged from her castle to take her place on the dais,