The United States is threatening to stop providing financial assistance to Jordan if the country continues developing its nuclear program without coordination with Israel.
Following six months of talks, Jordan continues to refuse Israeli demands to be included in the extraction of uranium and has failed to secure American approval for its nuclear reactor project. Last month, the government in Amman accused Israel of undermining its efforts to create a peaceful nuclear program. At the time, King Abdullah II effectively told Israel to "mind [its] own business."
Jordan officially denies it.
http://www.jordantimes.com/?news=28292
Aid to Jordan is of course part of the US's program to support Israel. Stopping it because something is out of line with Israel's interests wouldn't be surprising.