Outside the Shield

> Europe is finishing its most valuable new energy asset inside a war zone, in the one band of sea where the alliance guarantee stops and no insurer will follow. Romania's own Chief of Defence Staff said so in January, in plain words, about a project his country is spending 4.4 billion dollars to complete. The drone that a Romanian fighter destroyed near the platforms on 20 August changed none of that. It made an arrangement that had been public for months briefly impossible to ignore.

On 20 August the Romanian coast guard reported an object in the water about eighty nautical miles east of Constanța. Two F-16s went out. They found a marine drone carrying explosives a few hundred metres from the offshore works at Neptun Deep, where several hundred people were working, and destroyed it with cannon fire. Kyiv confirmed the drone was not Ukrainian. Romania's president attributed it to the Russian Federation. The president of the European Commission called it hybrid warfare and named no state at all.

Ten days earlier two drifting drones of Russian manufacture were destroyed in the same zone, though those were debris rather than an attack. Romania has cleared 159 sea mines from this basin since the war began, so floating hazards are the standing condition here. A guided warhead reaching manned platforms is a separate thing, and it has happened once.

What deserves attention is the position that device reached.

Neptun Deep is the largest new gas project in the European Union. OMV Petrom and Romgaz own it equally, six of ten wells are drilled, the budget runs to 4.4 billion dollars, and from 2027 its output would make Romania the Union's largest domestic gas producer. The installations stand roughly 160 kilometres from shore.

That distance is the whole story. Article 5 binds the alliance to treat an attack on one member as an attack on all, and it attaches to member territory. At sea, territory ends twelve nautical miles from the baseline. Beyond it lies the exclusive economic zone, where a state holds sovereign rights over resources and holds no sovereignty over the water. Neptun Deep sits at about eighty-six nautical miles.

General Gheorghiță Vlad, Chief of the Romanian General Staff, put this on the record in January. He said the exclusive economic zone falls outside Article 5, that Romania must therefore build its own capability to defend critical infrastructure, and that the problem runs past the gas field to submarine cables and energy networks. The Ministry of Defence answered that the perimeter is under permanent monitoring. Monitoring is a national promise, and it sits in a different category from a collective guarantee.

A second gap runs alongside the first and gets discussed even less. Fixed offshore installations conventionally fall outside war-risk cover, because the standard construction wording excludes loss occasioned by war. Romania has lived through what that means. Black Sea Oil & Gas brought its Midia field to first gas in June 2022, four months into the invasion, with no insurance at all. Chief executive Mark Beacom said cover cannot be bought once a war has started, and that the company was carrying the risk itself.

The response since has been calm to the point of being informative. Romgaz told its August earnings call the project was on budget and on schedule, and OMV Petrom said within a day that works were unaffected. No change to war-risk listed areas has followed, and no filing attributes any cost to the incidents.

All of this was public before any drone appeared, and the investment decision was taken in June 2023, sixteen months into the war. Two readings survive. Either the parties understand the exposure precisely and carry it deliberately, or it goes unrecorded because nobody holds an instrument that would record it. There is no underwriter to demand a premium on an uninsured platform, no lender to tighten a covenant on a balance-sheet development, and no collective-defence trigger beyond twelve miles. A disclosure quantifying security cost, a boundary change, or a slip in the 2027 date would separate them. None has appeared.

The broader point survives either reading. Europe has spent four years moving its energy supply off Russian pipelines and onto its own production, and much of that production sits offshore, along cables and platforms the alliance guarantee was never drafted to reach. The treaty was written for a continent defended along a land border. The assets that now matter most sit eighty-six nautical miles past where it stops.

A fighter jet firing its cannon at a sea drone is a vivid image. It is also an improvised answer to a question Romania asked out loud in January, and which nobody in Brussels has answered yet.