A majority of Americans fear the war with Iran will continue for a long time, according to a new Reuters and Ipsos poll. At the same time, President Donald Trump’s approval rating has fallen to 33 percent, the lowest level of his second term.

The survey suggests that concern over a prolonged conflict is also affecting views of the president’s handling of the situation. The poll does not give further detail on the reasons behind the decline, but it shows Trump’s support has weakened during his second term.

The findings matter because foreign policy crises can quickly shape public opinion at home. For Trump, the poll points to growing pressure as the Iran war remains a central concern for many Americans.