EUR/USD - 1.2343.. Euro rebounded at European opening on talk of early buying by Asian names n partly due to cross buying of eur/yen n eur/gbp but 1.2367 has capped intra-day gain so far. Market has not reacted to early news of Royal Dutch Shell's US$ 4.7 bln cash purchase of its US subsidiary which owns all of East Resources, Inc. Choppy trading is set to continue with