Louis XVI sibling Marie Thérèse, Madame Royale
Intervention by foreign powers
The other monarchies of Europe looked with concern upon the developments in France, and considered whether they should intervene, either in support of Louis or to take advantage of the chaos in France. The key figure was Marie-Antoinette's brother, the Holy Roman Emperor Leopold II. Initially, he had looked on the Revolution with equanimity. However, he became more and more disturbed as it became more and more radical. Despite this, he still hoped to avoid war.
On 27 August, Leopold and Frederick William II of Prussia, in consultation with émigrés French nobles, issued the Declaration of Pillnitz, which declared the interest of the monarchs of Europe in the well-being of Louis and his family, and threatened vague but severe consequences if anything should befall them. Although Leopold saw the Pillnitz Declaration as an easy way to appear concerned about the developments in France without committing any soldiers or finances to change them, the revolutionary leaders in Paris viewed it fearfully as a dangerous foreign attempt to undermine France's sovereignty.
In addition to the ideological differences between France and the monarchical powers of Europe, there were continuing disputes over the status of Austrian estates in Alsace, and the concern of members of the National Constituent Assembly about the agitation of émigrés nobles abroad, especially in the Austrian Netherlands and the minor states of Germany.
brother or sister kin