President Trump should not make any change in policy pertaining to the Jersualem’s status as the capital of Israel, a top European official warned Tuesday.

“A way must be found through negotiations to resolve the status of Jerusalem as the future capital of both states so that the aspiration of both parties can be fulfilled,” Federica Mogherini, the European Union’s high representative, told reporters.

Mogherini issued that exhortation alongside Secretary of State Rex Tillerson, who is in Brussels for meetings with European diplomats and NATO officials. Issues such as Trump’s policy towards the Iran nuclear deal has dominated U.S.-European engagement in recent months, but the reports that the president might make a landmark announcement about Jerusalem in the coming days sent the Middle East peace process to the top of Mogherini’s agenda.

“The European Union support[s] the resumption of a meaningful peace process towards a two-state solution,” she said. “We will discuss this further with Prime Minister Netanyahu next Monday here in Brussels and with President Abbas later, at the beginning of next year, as we will host both of them separately at our next foreign affairs councils.”

Trump promised to recognize Jerusalem as Israel’s capital during the 2016 campaign, but delayed the decision in order to allow son-in-law Jared Kushner and other U.S. officials an opportunity to try to negotiate a breakthrough in the Israeli-Palestinian standoff. Congress voted in 1995 to move the U.S. embassy from Tel Aviv to Jerusalem, but successive presidents have taken advantage of a waiver to delay the transition in the expectation that an eventual agreement would establish a Palestinian capital in East Jerusalem.

An announcement changing that policy could come as soon as Wednesday, according to reports. "President Trump is actively considering when and how to move the American Embassy from Tel Aviv to Jerusalem,” Vice President Mike Pence said last week.