The phrase "expand relations" is correct and can be used in written English.
It means to broaden or strengthen connections or connections between people, groups, or countries. Example: Our company plans to expand relations with international partners to increase our market presence in Asia.
His death after years of imprisonment underscores the challenge Western nations face as they try to expand relations with Libya.
North Korea issued a statement saying the two sides had conducted "serious deliberations on the ways to normalize and expand" relations and agreed that recent developments led to a "positive atmosphere".
MIAMI — The leading organization for Cuban exiles here is calling on the White House to expand relations with Cuba's government, and funnel much more public and private American money to the Cuban people.
Mr. Aronson's interest in the plight of blacks grew out of his early work as a staff member of the National Jewish Community Relations Advisory Council, which sought to expand relations between Jews and other racial and ethnic groups.
Those changes, including the freeing of some political prisoners and lifting the heavy censorship of the Internet, were enough to persuade President Obama to send Mrs. Clinton to explore ways to expand relations that have been badly strained for nearly a quarter century.
Whatever one might think of Prime Minister Abe and his agenda, this visit does offer a special opportunity to expand relations, simply because he has now been in office long enough to make multiple trips to Washington as prime minister -- a rare feat over the past quarter century of Japan's notorious carousel politics.
The U.S. Chamber of Commerce and National Association of Manufacturers have called for expanding relations with the island.
Given Turkey's stance on the genocide dispute, as well as its energy deals with Azerbaijan, the trip qualified as a modest start to expanding relations, said Cengiz Aktar, a political scientist at Bahcesehir University in Istanbul.
During the presidential campaign, Trump said he would reverse Obama's policy of expanding relations with Cuba unless the Castro government allowed more religious freedom and freed political prisoners.
The book covers topics such as the expansive role of non-governmental organizations, the growing influence of charismatic Pentecostalism, ethnic conflicts in East Africa, the failure of the African Union's peacekeeping efforts in Sudan's Darfur region, and Africa's expanding relations with the European Union.
Distance is rendered irrelevant, allowing direct, simultaneous, decentralized, and expanding relations of collaboration, advocacy, trade, production, and innovation, generating new forms of power constellation and distribution (Castells, 2000).
