US President Donald Trump has arrived in Ireland for a two-day visit that combines diplomatic engagements in Dublin with an appearance at the Irish Open golf tournament at his resort in County Clare.

Trump landed at Dublin Airport early Saturday under heavy security before heading into the Irish capital for meetings with Irish President Catherine Connolly and Prime Minister Micheál Martin.

Irish authorities have deployed more than 4,000 police officers and other security personnel, including snipers, for the visit. The operation is expected to cost about €20 million as officials prepare for large protests and the movement of thousands of people around the president.

Trump is expected to hold discussions with Martin on issues including the Middle East conflict, US tariffs on European pharmaceutical products and immigration. His meeting with Connolly is also expected to attract attention, particularly over Ireland’s position on the war in Gaza.

After his engagements in Dublin, Trump will travel to Doonbeg on Ireland’s west coast, where his luxury resort is hosting part of the Irish Open tournament.

The president, who is known for his interest in golf, may present the tournament trophy on Sunday. About 40,000 spectators are expected to attend the competition, with world number two Rory McIlroy among the biggest attractions.

Trump’s visit has also drawn criticism over the combination of his presidential duties and his family’s business interests. His Doonbeg resort, purchased by the Trump Organization in 2014, is expected to benefit from the international attention surrounding the tournament.

Political and government ethics experts have questioned the decision to combine an official presidential visit with activities at a Trump-owned property.