If our products <will>

[MichaelLu2000]

Is it possible to use will in an if clause?

I know most of the time we don't use it but I saw an article saying that there are some exceptions:

Should I Use Will or Would in an If-Clause?

Many writers wonder if it’s equally correct to use “will” or “would” in an if-clause. The short answer is no, but there are exceptions to…

www.grammarly.com

Are the following sentences acceptable?

If our products will be influenced by the tariffs, the current prices won’t be very competitive. (we already know our products will be influenced)

If they will attack us economically, buying new weapons will be meaningless. (we already know they will attack us economically)

 

[emsr2d2]

It's not natural in either case.

If our products are influenced by ...
If they attack us economically ...

In both cases, though, you said that you already know it's a certainty. In that case, either start with "When" or simply start with a fact and follow it with "so".

When our products are influenced by ...
When they attack us economically ...

Our products will be influenced by the tariffs so the current prices ...
We will be attacked economically so buying new weapons ...
They will attack us economically so buying new weapons ...

 

[MichaelLu2000]

It's not natural in either case.

If our products are influenced by ...
If they attack us economically ...

In both cases, though, you said that you already know it's a certainty. In that case, either start with "When" or simply start with a fact and follow it with "so".

When our products are influenced by ...
When they attack us economically ...

Our products will be influenced by the tariffs so the current prices ...
We will be attacked economically so buying new weapons ...
They will attack us economically so buying new weapons ...

Thanks for replying. Will it be better if all the "will" are replaced with "be going to"?

 

[emsr2d2]

Thanks for replying. Will Would it be better if all the to replace "will" are replaced each time with "be going to"?

No. Using "will" and "be going to" mean the same in those sentences. Neither is better than the other.