From 1527, it was clear that Charles V was the dominant power in Europe. This made Henry's attempts to annul his marriage with Charles' aunt (Catherine) difficult, and domestic issues affected his foreign moves.
1527
Henry allied with France in the treaty of Amiens and Treaty of Westminster.
1532
The League of Schmalkalden: Organisation of German princes and free cities which supported Martin Luther. This alliance was fairly pointless as there was huge amounts of mistrust among the members.
1527
Treaty of Westminster:
-Wolsey's attempt to unite France and England against Charles V.-In this treaty, Mary again was offered for a diplomatic marriage to Francis I/ his second son.-Henry threatened Charles with armed intervention (with military power he didn't have) if he did not make peace (completely ignored by Charles V).
1532
Henry formed a further alliance with France, in an attempt to pressurise Charles into supporting his marriage annulment - the tactic failed again!
1538
Charles and Francis signed the Treaty of Nice, followed by the 1539 Pact of Toledo, where they each agreed to sever relations with Henry.
Pope Paul III deposed Henry and absolved English Catholics from obedience to their ruler.
1539
Pope Paul III sent Cardinal Beaton to Scotland and Cardinal Pole to France to rouse support for a Catholic crusade against Henry.
Henry responded by marrying the German Princess, Anne of Cleves (protestant), and therefore seeking further alliance with the League of Schmalkalden.
However, this became unnecessary when relations between Charles V and Francis I broke down, making Henry's position more secure.