Amid the heightened tensions over the standoff, Iran has threatened to block the Strait of Hormuz, a strategic corridor for Western energy supplies.
Security forces and civilian fighters still hold parts of Tal Afar, in Nineveh province, along a strategic corridor to Syria, according to deputy provincial council chief Nuriddin Qabalan.
The most eye-catching proposal is to spend £2bn turning the A303 into a strategic corridor to the south-west, partly by building a 1.8-mile dual-carriageway tunnel at Stonehenge.
Peel is in the process of building what it calls the Ocean Gateway, the renaissance of a strategic corridor encompassing the city regions of Liverpool and Manchester and adjacent areas within Cheshire and Warrington.
"All road and rail routes to the north-east pass through this strategic corridor and any trouble is bad news for our defence preparedness vis-à-vis China," says Major General Gaganjit Singh, a former official in India's military intelligence.It threatens to spread beyond Assam into neighbouring Meghalaya and Nagaland.
This includes over £400m on rail projects such as electrifying the Great Western mainline, funding new expressways on the A30 in Cornwall and A417 in Gloucestershire, and £2bn to create a new strategic corridor to the south west along the A303 and A358.
The fighting, the heaviest between government troops and rebels in months, began on Wednesday when 500 troops from the largest guerrilla army began an attack on Dabeiba, a town along a strategic corridor through which guns and supplies arrive from Panama, 100 miles away.
Among them is the Sunderland Strategic Corridor, which includes a bridge over the River Wear.
Among those which will have to bid for funding, will be reviewed or put back, are the Sunderland Strategic Corridor, upgrades to the A19 and A1 dualling.
Yabroud is the last opposition stronghold in the rugged Qalamoun mountains, a strategic corridor close to the country's major north-south highway between Damascus and Homs.
It was not going to open a strategic corridor, like Sinjar," she said, referring to a town in Iraq's Nineveh province near Mount Sinjar, which was declared "liberated" by Kurdish peshmerga last month.
