New Delhi, July 2 -- DOHA - When Qatar's investment agency published its 2025 results on Wednesday, the number that told the most was not the total. It was the ranking at the top.

The UAE contributed $814 million to Qatar's foreign direct investment last year, spread across 73 projects - more than the United States' $587 million from 53 projects and more than Britain's $222 million across 37. For the first time, the country sharing Qatar's western border has become its single most important source of external capital, AGBI reported on the Invest Qatar annual report.

It is a realignment worth noticing. Gulf-to-Gulf investment has long existed in theory. The data now suggests it is operating at a scale that makes a real difference to Qata...