WASHINGTON — President Donald Trump sent out tariff letters to seven smaller U.S. trading partners on Wednesday with a pledge to announce import taxes on other countries later in the day.

None of the countries targeted in the letters — the Philippines, Brunei, Moldova, Algeria, Libya, Iraq and Sri Lanka — is a major industrial rival to the United States.

Trump, during a White House meeting Wednesday with African leaders, talked up trade as a diplomatic tool. Trade, he said, “seems to be a foundation” for him to settle disputes between India and Pakistan, as well as Kosovo and Serbia.

“You guys are going to fight, we’re not going to trade,” Trump said. “And we seem to be quite successful in doing that.”

On Monday, Trump placed a 35% tariff on Serbia, one of the countries he was using as an example of how fostering trade can lead to peace.

Trump said the tariff rates in his letters were based on “common sense” and trade imbalances, adding that he would be sending a letter on Wednesday or Thursday to Brazil. Trump suggested he had not thought of penalizing the countries whose leaders were meeting with him in the Oval Office — Liberia, Senegal, Gabon, Mauritania and Guinea-Bissau — as “these are friends of mine now.”

Countries are not complaining about the rates outlined in his letters, he said, even though those tariffs are close to the ones announced April 2 that rattled financial markets. The S&P 500 index was up slightly in Wednesday trading.

“We really haven’t had too many complaints because I’m keeping them at a very low number, very conservative as you would say,” Trump said.

Officials for the European Union, a major trade partner and source of Trump’s ire on trade, said Tuesday that they are not expecting to receive a letter from Trump listing tariff rates. The Republican president started the process of announcing tariff rates on Monday by hitting two major U.S. trading partners, Japan and South Korea, with import taxes of 25%.

According to Trump’s letters, imports from Libya, Iraq, Algeria and Sri Lanka would be taxed at 30%, those from Moldova and Brunei at 25% and those from the Philippines at 20%. The tariffs would start Aug. 1.