On August 20, 2017, Party A (Netherlands) signed with Party B (VN) a contract to buy and sell construction steel, priced at 300 USD/ton. Under the contract, A has a "special purchase right" that allows A to double the quantity purchased, for the same price and
conditions like the contract signed with the condition that A must declare to exercise this right before December 15, 2017.
On 11/26/2017, A notified B that he will exercise this special purchasing right and will open a L/C within
approximately from November 15, 2017 to November 30, 2017.
Steel prices in the global market increased, on December 9, 2017, B proposed to agree on a price applied to the quantity
Additional purchases under "special purchase rights" terms
B asked to increase the price applied for additional purchases of 320 USD/ton, but A did not accept it, only
want to keep the old price.
So B did not perform, A sued the ICC in Paris.
So, an increase in steel prices in the world market, causing damage to B is considered a "difficulty obstacle" for B to have
right to ask A to renegotiate to share difficulties or obstacles?