Donald Trump will make his first foreign visit this week, eschewing more typical early presidential destinations like Canada in favor of a photo-op heavy swing through Saudi Arabia, Israel, and the Vatican, before attending next week’s NATO summit in Brussels. Of these, perhaps the most interesting will be his time in Riyadh, where he will conduct bilateral meetings and attend two summit gatherings: one a Gulf Cooperation Council (GCC) meeting, and the other a U.S.-Arab Islamic summit.

Despite Trump’s negative comments about Saudi Arabia during the campaign, he has been more supportive since his inauguration, and likely looks forward to a warm reception in Riyadh. For their part, the Saudis have invested heavily in lobbying the new administration, with whom they believe they can work on issues from counterterrorism to Iran. For a president under fire at home, and whom even foreign allies treat with extreme caution, the open embrace of Saudi leaders is undoubtedly welcome.

During the visit, Trump is expected to make two announcements. The first is a massive arms sale worth as much as $300 billion over a decade. The package includes a number of advanced systems, most notably a THAAD missile defense system, and is intended to improve Saudi Arabia’s military capabilities. The second rumored announcement – the creation of an “Arab NATO” – is more unexpected. Though such an idea has been suggested before, regional realities have typically prevented it from advancing past the idea stage.

Indeed, though the U.S. has long sought to build up military cooperation and interoperability between regional states, policy differences and long-running disputes have torpedoed similar initiatives in the past. From military cooperation within the GCC to 2015’s Saudi-led announcement of an “Islamic coalition to fight terrorism” these efforts have yielded few concrete results. Even at the height of the Cold War, the Baghdad Pact (CENTO) was rendered ineffectual by regional disputes.

In reality, the likelihood of failure may not worry either Trump or the Saudi leadership, both of whom have shown a propensity for policy characterized by big, flashy announcements that are rarely followed through with concrete steps.

Of greater concern are other areas of likely discussion at the summit, particularly the prospect of greater U.S.-Saudi cooperation against Iran. Though Trump has thus far proven unwilling to “rip up” the Iranian nuclear deal, he has initiated new sanctions on Iran, and repeatedly promised a more assertive U.S. policy to deal with Iran’s “destabilizing” regional behaviors. Unfortunately, this approach carries risks, including the prospect of undermining the nuclear deal or of creating a wider regional conflict.

And while the President and Saudi leaders may agree on many policy issues, the summit does present several areas of potential conflict. For one thing, the hosts have extended an invitation to Sudan’s President Omar al-Bashir, currently under indictment by the ICC for war crimes and genocide, a choice which has upset many in Washington, if not necessarily the President himself. Trump is likely to accidentally provide support to one side in the ongoing influence struggle between Mohammed bin Nayef, the Saudi Crown Prince, and Mohammed bin Salman, the King’s son and second-in-line to the throne.

Trump’s scheduled speech on Islam also promises a variety of opportunities for misunderstanding and misstatements; in addition to the President’s habit of deviating from prepared remarks, the speech itself is reportedly being written by advisor Stephen Miller. Miller is not only the author of the Trump administration’s controversial travel ban on various Muslim countries, but also waged a campaign during his college years to create awareness of the dangers of “Islamofascism.”

In short, though Trump’s trip to Saudi Arabia offers little in the way of policy disagreements – and presents a valuable opportunity for the new administration to distance itself from turmoil at home – it also offers plenty of potential pitfalls for the new President and his staff. And that’s before he even makes it to stop number two.