today I read the news that Iran has warned about "more serious revenge" against the United States. such statements are not some kind of joke and what exactly they can do?

I believe that 2020 began very poorly if you look at it from a political point of view.
If the disagreements between the US and Iran will continue, this could end badly. How will this news affect the market? can they start to sharply raise bitcoin at the price? if bitcoin will grow fast, then altcoins will be even worse

We all heard that bitcoin will have an improvement to it's price because people in Iran will use bitcoin to secure all of their assets, but i don't think we should be happy about it because a lot of people will die if the war between Iran and US will continue, so we should be really be afraid on this situation.
Not a lot of peoples would really die as the governments from both the countries would not really make it happen, but of course a lot of resources would be spent in order to stop this war. A lot of economy would be required and also I think that most of the peoples would convert their fiat into bitcoins any movement as it would keep their funds safer.
In this situation the price for both the respective currencies might fall and we can see a surge in their prices so a lot of peoples might fear this and might convert their fiat into bitcoins and it might be what is deriving the price for bitcoin on the peak. We might expect the price to go more up.