Richelieu resolves to undermine the power of Austria--State of Europe--Opposition of the Queen-mother to a new war--Perseverance of the Cardinal--Anne of Austria joins the faction of Marie de Medicis-Gaston is appointed General of the royal army--Richelieu retires from the Court--Alarm of Louis XIII--A King and his minister--Louis leaves Paris for the seat of war--Monsieur is deprived of his command, and retires to Dauphiny--Marie de Gonzaga is sent to the fortress of Vincennes--Monsieur consents to forego his marriage until it shall receive the royal sanction, and the Princess returns to the Louvre--Marie is invested with a partial regency--Forebodings of the Cardinal--Termination of the campaign--Renewed discord--Richelieu becomes jealous of Bassompierre--Louis abandons his army, and is followed by the minister--Counterplots--An offended mistress and an ex-favourite--A hollow peace--Gaston retires to the Court of Lorraine, where he becomes enamoured of the Princesse Marguerite--The Cardinal invites him to return to Paris--Monsieur accepts the proposed conditions--The French troops march upon Piedmont--Richelieu is appointed Lieutenant-General of the royal forces in Italy--The King resolves to follow him--Anxiety of Marie de Medicis to avoid a rupture with Spain--Dissensions between the two Queens--Mademoiselle de Hautefort--Failing influence of Marie de Medicis--Self-distrust of the King--The Queen-mother endeavours to effect a reconciliation between her sons. CHAPTER VII 1630