The will to power is a natural expression of a people. The goal should always be to expand, improve, conquer new territories etc. Without that, there’s stagnation, being conquered and death. The blame is at the feet of those who allow themselves to be weak. Natura abhorret vacuum. If it’s not Poland, it would’ve been Germany or the USSR (as it was). Be that as it may, one should not bear grudges to an excess, to the point where it becomes counterproductive – either personally or as a nation.