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SRCAl Jazeera
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LEANCenter
WORDS339
ENT10
SAT · 2026-04-18 · 21:41 GMTBRIEF NSR-2026-0418-70615
News/Iran war live: Tehran slams US ‘piracy’ /Iran reasserts control of Hormuz Strait as Trump warns again…
NSR-2026-0418-70615News Report·EN·National Security

Iran reasserts control of Hormuz Strait as Trump warns against ‘blackmail’

Following a brief reopening, Iran's Islamic Revolutionary Guard Corps (IRGC) Navy has reasserted control over the Strait of Hormuz, threatening to target any vessel attempting passage until the US lifts its naval blockade on Iranian vessels and ports. This action reverses a previous decision to open the strait as part of a ceasefire agreement.

By Al Jazeera staffAl JazeeraFiled 2026-04-18 · 21:41 GMTLean · CenterRead · 2 min
Iran reasserts control of Hormuz Strait as Trump warns against ‘blackmail’
Al JazeeraFIG 01
Reading time
2min
Word count
339words
Sources cited
4cited
Entities identified
10entities
Quality score
100%
§ 01

Briefing Summary

AI-generated
NEWSAR · AI

Following a brief reopening, Iran's Islamic Revolutionary Guard Corps (IRGC) Navy has reasserted control over the Strait of Hormuz, threatening to target any vessel attempting passage until the US lifts its naval blockade on Iranian vessels and ports. This action reverses a previous decision to open the strait as part of a ceasefire agreement. The IRGC claims the US blockade violates the ceasefire. Iranian parliament speaker Mohammad Bagher Ghalibaf criticized the US blockade as a "clumsy and ignorant decision," emphasizing Iran's control over the Strait. The Strait of Hormuz is a critical shipping lane in the Persian Gulf and the Sea of Oman.

Confidence 0.90Sources 4Claims 5Entities 10
§ 02

Article analysis

Model · rule-based
Framing
National Security
Conflict
Tone
Mixed Tone
AI-assessed
CalmNeutralAlarmist
Factuality
0.80 / 1.00
Factual
LowHigh
Sources cited
4
Well sourced
FewMany
§ 03

Key claims

5 extracted
01

Mohammad Bagher Ghalibaf said the Strait of Hormuz is under the control of the Islamic Republic.

quoteMohammad Bagher Ghalibaf
Confidence
1.00
02

The IRGC navy said the strait will be closed until the United States lifts its naval blockade on Iranian vessels and ports.

factualIRGC
Confidence
1.00
03

Iran's Islamic Revolutionary Guard Corps Navy (IRGC) says the Strait of Hormuz is closed.

factualIRGC
Confidence
1.00
04

More than a dozen commercial ships passed through the waterway before the IRGC reversed course.

factual
Confidence
0.90
05

Oil prices dropped on global markets after Iranian Foreign Minister Abbas Araghchi said the waterway was completely open.

factual
Confidence
0.90
§ 04

Full report

2 min read · 339 words
Iran reasserts control of Hormuz Strait as Trump warns against ‘blackmail’Top negotiator Mohammad Bagher Ghalibaf says US naval blockade of Iran’s ports is ‘a clumsy and ignorant decision’.Iran’s Islamic Revolutionary Guard Corps Navy (IRGC) says the Strait of Hormuz is closed and that any ship that attempts to pass through the waterway will be targeted, a dramatic reversal less than 24 hours after the critical shipping lane was reopened.In a statement carried by Iran’s Student News Agency, the IRGC navy said on Saturday the strait will be closed until the United States lifts its naval blockade on Iranian vessels and ports. It said the blockade was a violation of the ongoing ceasefire agreement in the US-Israel war on Iran.Recommended Stories list of 4 itemslist 1 of 4Gunfire reported by vessel in Strait of Hormuzlist 2 of 4Iran closes Strait of Hormuz again over US blockade of its portslist 3 of 4Iran’s deputy FM says no date for more US talks until ‘framework’ agreedlist 4 of 4Mazzucato on the Iran war’s economic shock: Who pays the price?end of list“We warn that no vessel of any kind should move from its anchorage in the Persian Gulf and the Sea of Oman, and approaching the Strait of Hormuz will be considered cooperation with the enemy, and the offending vessel will be targeted,” it said.Mohammad Bagher Ghalibaf, Iran’s parliament speaker and a senior negotiator in talks between Washington and Tehran on ending the war, said in a television interview that “the Strait of Hormuz is under the control of the Islamic Republic”.“The Americans have been declaring a blockade for several days now. This is a clumsy and ignorant decision,” he added.The reassertion of control came just hours after Iran had briefly reopened the strait, in line with a 10-day ceasefire between Israel and Lebanon. Oil prices dropped on global markets after Iranian Foreign Minister Abbas Araghchi said on Friday that the waterway was “completely open for all commercial vessels.”More than a dozen commercial ships passed through the waterway before the IRGC reversed course.
§ 05

Entities

10 identified
§ 06

Keywords & salience

8 terms
strait of hormuz
1.00
iran
0.90
us naval blockade
0.80
islamic revolutionary guard corps navy
0.70
ceasefire agreement
0.60
shipping lane
0.50
oil prices
0.40
persian gulf
0.40
§ 07

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