戦争の勃発で彼らの計画は完全につぶれた。の英語

Their plans blew up when the war broke out.

The war has ruined―smashed―the project.

Owing to the war, my dear scheme has miscarried―come to grief―fallen through―gone to the ground―（他動詞構文にすれば）―The war has dashed my scheme to earth.

The war has smashed the whole concern.

The war has deranged all my plans―upset all my plans.

We had the war break out, and abandoned the project.

A chain of events led to the outbreak of the war.

Their plan result in failure.

Their plan resulted in failure.

It proved to be the deathblow to their plan.

It proved to be the deathblow to their plans.

The war brought ruin to the country.

Their drastic reform plan came to nothing.

And their plan was never carried out.

At first, their plan is not taken seriously.

As the war went on, defeatism spread across the nation.

Men who were bereft of reason conducted the war.

At last both countries agreed on putting an end to the war.

They knelt down and prayed that the war would end soon.

They explored every avenue in an attempt to avoid war.

The war wiped out the entire population.

The war ravaged the country.

The war resulted from a mistaken policy.

The war wasted the country.

They had to endure great hardship during the war.

The country was gearing up for war.

I have no knowledge about their plans.

the disclosed purpose of their wicked plan

The country embroiled itself in war.

Shelters have been built in fear of war.