Recent British foreign policy has been dominated by the conflict in Ukraine and a shifting relationship with China, but Mr. Cleverly will signal a shift toward regions that he believes will constitute a greater share of the global economy in the coming decades.

Next week, the foreign secretary will announce that the United Kingdom will seek to develop long-term partnerships with Latin American, Asian, and African nations.

James Cleverly will deliver his first big address at the Foreign Office on Monday, in which he will advocate for alignment with the three regions’ increasingly prominent nations.

This includes nations not considered “traditional partners” of the United Kingdom.

Mr. Cleverly is anticipated to remark: “In the coming decades, Asia, Africa, and Latin America will control an ever-increasing proportion of the global economy and, consequently, the global power structure.

“Trade, investment, development, defense, technology, and climate change will all be a part of the United Kingdom’s offer, which will be tailored to the country’s strengths and requirements.

“This will be supported by a trustworthy source of infrastructure investment.

Therefore, I am determined that we will make faith-based investments in the countries that will define the future of the globe.

He would assert: “We will demonstrate strategic tenacity and a willingness to make long-term commitments.

“I want our foreign policy to constantly plan for the future, scan the horizon, and look 10, 15, and 20 years into the future.”

Mr. Cleverly was named foreign secretary by Liz Truss in September but has maintained the role under the administration of Rishi Sunak.

A few weeks ago, Mr. Sunak signaled a new path in the United Kingdom’s relationship with China by declaring that the “golden age” of relations had ended.

Mr. Sunak stated that his administration would instead rely on “vigorous pragmatism” to compete with international rivals.