The answer by user9570789 is correct, but I wanted to go into a little more detail:
There are two phrases in this expression, which can be used separately. The first is "take steps"
take steps (v): To do what is necessary to prepare for or begin doing something.
They took steps to prevent another fire in their hotel, by doing such things as installing automatic extinguishers in every room.
"What steps is the administration going to take to ease taxes on the average citizen?" the reporter asked.
Second, "engineer", used as a verb:
engineer (v): Skillfully arrange for (something) to occur.
In the movie, the twins cleverly engineered a family crisis to bring their estranged parents back together.
The prosecutor alleged that the defendant engineered a series of forged press releases in order to manipulate the company's stock price.
Put together, you get this variation on, "Trump took steps to engineer a diplomatic breakthrough."