SINGAPORE/NEW DELHI (Reuters) – China-backed Asia Infrastructure Investment Bank (AIIB) on Friday set an ambitious target to become operational by the end of the year after a three-day meeting of prospective founding member nations in Singapore. AIIB said in a statement that the meeting finalised the articles of agreement, which are expected to be ready for signing by the end of June, but did not give details. Delegates told Reuters that China would likely take a 25-30 percent stake in the bank, and India was likely to be the second-largest shareholder.