The Washington Post reported from sources familiar with the details that Israel was surprised by the United Arab Emirates' declaration that any move to annex the West Bank would constitute a red line for Abu Dhabi, and that it was published due to frustration over Prime Minister Benjamin Netanyahu's failure to respond to confidential appeals on the issue. An Israeli source admitted that "while the Emirates did express their concerns about annexation through other channels, this declaration came as a surprise. It's very unusual."