Trump Raises Pressure on Iran Over Hormuz; Lee Jae-myung Government Urged to Set Clear National-Interest Line

U.S. President Donald Trump is again increasing pressure in the Middle East. The United States, targeting Iran, has even raised the possibility of controlling the Strait of Hormuz as it steps up military and diplomatic pressure. The strait is a key route for global oil shipments and is vital for South Korea, since a large share of the Middle Eastern crude it imports passes through it. The situation is no longer just a regional dispute; it is becoming a broader crisis tied to Washington’s strategy to check China, a reshaping of global supply chains and energy security concerns.

The Lee Jae-myung government has faced a difficult foreign-policy test soon after taking office. The United States is pressing allies to expand their roles, and European countries are accelerating talks on international coordination to secure maritime safety. Lee has reportedly moved to respond by considering participation in a Britain- and France-led international video conference on the Strait of Hormuz.

South Korea’s government, however, should be most wary of “pragmatic diplomacy” without clear principles. Pragmatism should mean flexibility grounded in national interests. Without a clear standard, it can look like indecision. Approaches that either unsettle ties with the Middle East to avoid displeasing Washington, or heighten concerns about strains in the South Korea-U.S. alliance by focusing only on Middle East variables, both carry risks.
 
South Korea relies on its alliance with the United States as the core of its security, while its energy structure remains heavily dependent on the Middle East. That makes this more complex than choosing one side. The Strait of Hormuz issue can directly affect international oil prices, the exchange rate, inflation and industrial competitiveness. Markets are already voicing concern that if Middle East risks become prolonged, South Korea’s growth outlook and financial markets could face significant pressure.
 
A central problem is that South Korean diplomacy still appears driven by short-term responses. Each time tensions rise, the government is seen adjusting its stance and weighing how far to go, without a clear sense of strategic priorities. Standards are not clearly defined on how much to cooperate if the United States makes requests, where to draw the line between military involvement and support for maritime safety, or what role to play between economic sanctions and diplomatic mediation.
 
For the Lee government’s stated goal of “pragmatic diplomacy centered on national interests” to carry real meaning, it must first define what those national interests are. National interests are not the same as a government’s political calculations. Managing relations with the United States matters, but so do energy security and industrial stability. Once foreign policy is approached through domestic political camps, national strategy is bound to wobble.
 
The Hormuz situation also highlights vulnerabilities in South Korea’s economic structure. Its crude import mix still depends heavily on the Middle East, and preparations for maritime logistics risks are not sufficient. That is why discussions on diversifying supply chains, expanding strategic stockpiles and redesigning energy security must move in parallel. Diplomatic rhetoric alone cannot prevent a crisis.
 
What is needed now is not a binary choice of siding with the United States or the Middle East. South Korea must clearly define its national interests and act consistently by that standard. Alliances are important, but cannot come ahead of national interests. At the same time, national interests should not be used as a pretext to undermine trust in an alliance. Diplomacy ultimately requires balance.
 
Trump’s pressure is likely to intensify. The world is already moving toward a new order in which economics and security are increasingly intertwined. South Korea has reached a point where it cannot hold out with an ambiguous posture. The Lee government now needs to show, beyond the word “pragmatic,” what standards will guide the country’s actions.