…But that won't be easy. Its larger neighbor has its own economic problems. Its sovereign wealth funds are losing money. Last week, Mubadala Development Co. acknowledged it lost more than $3 billion last year. And with oil prices rooted around $50 a barrel, Abu Dhabi will have to dip into its foreign reserves to help its federal partners. In the desert, green shoots often tum out to be mirages. EFTA_R1_01517113 EFTA02442242 Write to Andrew Critchlow at andrew…