{"id":64929,"date":"2026-07-17T00:38:18","date_gmt":"2026-07-17T04:38:18","guid":{"rendered":"https:\/\/www2.stockmarketwatch.com\/stock-market-news\/global-markets-tumble-as-us-iran-hostilities-escalate-nikkei-drops-5\/64929\/"},"modified":"2026-07-17T00:38:18","modified_gmt":"2026-07-17T04:38:18","slug":"global-markets-tumble-as-us-iran-hostilities-escalate-nikkei-drops-5","status":"publish","type":"post","link":"https:\/\/www2.stockmarketwatch.com\/stock-market-news\/global-markets-tumble-as-us-iran-hostilities-escalate-nikkei-drops-5\/64929\/","title":{"rendered":"Global Markets Tumble as US-Iran Hostilities Escalate; Nikkei Drops 5%"},"content":{"rendered":"<h2>Key Takeaways<\/h2>\n<ul>\n<li><strong>Global equities are in a sharp sell-off<\/strong>, with Japan\u2019s <strong>Nikkei 225 (<a href=\"\/stock\/%5ENI225\">^NI225<\/a>)<\/strong> plunging <strong>5.04%<\/strong> to <strong>63,466.28<\/strong> as Middle East hostilities shred a month-old preliminary peace deal.<\/li>\n<li><strong>Iran\u2019s Revolutionary Guard<\/strong> has threatened a total halt of regional energy exports, stating that &quot;not a single drop of oil or gas&quot; will leave the region while U.S. &quot;aggressions&quot; continue.<\/li>\n<li><strong>U.S. forces conducted a sixth consecutive night of strikes<\/strong> targeting Iranian infrastructure, including bridges, railway stations, and military sites in <strong>Lorestan<\/strong>, <strong>Hormozgan<\/strong>, and <strong>Sistan and Baluchistan<\/strong> provinces.<\/li>\n<li><strong>UK mortgage rates are climbing again<\/strong> as major lenders like Barclays (<a href=\"\/stock\/BARC\">BARC<\/a>) and Nationwide (<a href=\"\/stock\/NBS\">NBS<\/a>) hike fixed-rate deals by up to <strong>0.35 percentage points<\/strong> due to rising swap rates and inflation fears.<\/li>\n<li><strong>Energy markets remain on high alert<\/strong> as Iran asserts control over the <strong>Strait of Hormuz<\/strong>, a critical chokepoint for 20% of global oil and gas shipments.<\/li>\n<\/ul>\n<h2>Middle East Conflict Triggers Market Panic<\/h2>\n<p>Global financial markets are reeling today as the fragile truce between the United States and Iran has completely collapsed. Following a sixth night of intensive U.S. airstrikes, the <strong>Iranian Revolutionary Guard<\/strong> warned that it would block all energy exports through the <strong>Strait of Hormuz<\/strong>. This escalation has sent <strong>European stock futures<\/strong> sharply lower, with the <strong>Euro Stoxx 50<\/strong> futures down <strong>1.1%<\/strong> and <strong>DAX<\/strong> futures falling <strong>0.9%<\/strong>.<\/p>\n<p>In Asia, the damage was even more pronounced. The <strong>Nikkei 225 (<a href=\"\/stock\/%5ENI225\">^NI225<\/a>)<\/strong> suffered a massive <strong>5.04%<\/strong> drop, while the <strong>Topix<\/strong> index fell <strong>3.15%<\/strong>. Investors are fleeing riskier assets as the prospect of a prolonged energy shock looms, with analysts warning that <a href=\"https:\/\/stockmarketwatch.com\/energy\/crude-oil\" data-internallinksmanager029f6b8e52c=\"12\" title=\"Crude oil\">oil prices<\/a> could spike toward <strong>$150\u2013$200 per barrel<\/strong> if the Strait of Hormuz remains closed.<\/p>\n<h2>U.S. Strikes Hit Critical Iranian Infrastructure<\/h2>\n<p>U.S. Central Command (CENTCOM) confirmed a new wave of precision strikes aimed at degrading Iranian military and logistics capabilities. Reports from Iranian state media indicate that strikes hit an airport in <strong>Iranshahr<\/strong>, a railway junction in <strong>Bandar Abbas<\/strong>, and several strategic bridges in <strong>Lorestan<\/strong> and <strong>Hormozgan<\/strong> provinces.<\/p>\n<p>The U.S. military has also begun enforcing a naval blockade of Iranian ports, reportedly boarding vessels in the <strong>Gulf of Oman<\/strong> and disabling at least one tanker attempting to break the blockade. President Donald Trump has reiterated threats to target Iranian energy infrastructure and power plants if Tehran continues its retaliatory drone and missile attacks on U.S. bases in <strong>Jordan<\/strong>, <strong>Bahrain<\/strong>, and <strong>Kuwait<\/strong>.<\/p>\n<h2>Impact on UK Borrowers and Global Currencies<\/h2>\n<p>The resumption of hostilities is having an immediate impact on the UK economy. Major lenders, including Barclays (<a href=\"\/stock\/BARC\">BARC<\/a>), NatWest (<a href=\"\/stock\/NWG\">NWG<\/a>), and Nationwide (<a href=\"\/stock\/NBS\">NBS<\/a>), have raised mortgage rates for the second time in a fortnight. These moves are driven by a spike in <strong>swap rates<\/strong>, which have risen from <strong>3.95%<\/strong> to <strong>4.22%<\/strong> as markets price in higher-for-longer inflation due to surging energy costs.<\/p>\n<p>In the currency markets, the <strong>Swiss Franc<\/strong> and <strong>U.S. Dollar<\/strong> are seeing safe-haven demand, while the <strong>Singapore Dollar<\/strong> has entered a consolidation phase. Meanwhile, the <strong>Swiss Franc<\/strong> steadied against the greenback as the geopolitical risk countered a shifting outlook for the Federal Reserve&#39;s interest rate path.<\/p>\n<h2>Corporate and Labor Developments<\/h2>\n<p>Amidst the geopolitical turmoil, some localized economic developments continue. In the UK, workers at <strong>Neo Next<\/strong> represented by the <strong>Unite<\/strong> union successfully secured a pay settlement following strike pressure. However, the broader corporate sentiment remains gloomy; investors in European tech giants like <strong>Spotify (<a href=\"\/stock\/SPOT\">SPOT<\/a>)<\/strong> and <strong>Revolut<\/strong> are warning that Europe\u2019s heavy reliance on U.S. technology could leave the continent vulnerable during periods of intense transatlantic friction.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Key Takeaways Global equities are in a sharp sell-off, with Japan\u2019s Nikkei 225 (^NI225) plunging 5.04% to 63,466.28 as Middle 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