What to do as Martell, when Baratheon and Tyrell both attack you?

[Reffy]

I played a game recently as Martell, and both Baratheon and Tyrell made an alliance on turn 1 and attacked me.
I could hold on, but I lacked power tokens and the other players were too busy fighting each other.

Any tips, hints?

[turtle]

Diplomacy! If thats not an option, muster and use ships in the Sea of Dorne as support. Your opponent will exhaust their armies if they attack and if they recognize your fleet in that area they'd be wise to avoid you all together.

[Xrystofer]

Use Yronwood and sea of dorne for support. Tyrell will usually attack your Starfall.

[Reffy]

Yeah, I tried to use East Summer Sea as my main support, but it could easily be raided.
Will try Sea of Dorne and Yronwood more.

Tyrell indeed attacked Starfall many times.

Edit: This plan worked well, untill I got the Westeros card that said no support orders can be played. :p

[Mixta]

Lots of support ships in the sea of dorne and focus on keeping units alive while killing theirs. Additionally, have to hope for Stark help in pressuring Baratheon/Lannister help in pressuring Tyrell.

[Henrythesecond]

Remember to use Doran Martell as a deterrant, too. The threat of tumbling down to the bottom of an influence track can make a potential attacker think twice.

[darthradoif]

Normally there are pairs of alliances. If Tyrell and Baratheon are allies then you should have either Stark or Lannister as your ally. Depending on who the Greyjoy chose to attack.
If your ally helps (and is competent), and they continue to double team you, you will lose, but either Baratheon or Tyrell will lose as well, because they can't effectively fight on 2 fronts (That's why double teaming is rarely a profitable strategy).

Other than that: Have 2-3 ships in sea of dorne with support and 1 in East summer sea. Use sunspear for muster and Yronwood as a front line. In a normal game you would have control over either storms end or starfall, but since you're being double teamed you won't be able to hold on to either until your teammate starts taking heat from you.

Also use your House cards well. Tyrell doesn't have star orders so it takes one miscalculated move on their part to lose a unit and with it all pressure. Doran Martel is a deterrent, but is best used right after Clash (he offsets the fact that Martell have a harder time gathering tokens)

[Reffy]

The problem was that Stark, Greyjoy and Lannister attacked each other, while ignoring Tyrell and Baratheon. So for me it was 1 vs 2.

I could barely get power tokens, so I always lost the bidding wars.

Turtling in Sea of Dorne and East Summer Sea with ships is the key here I think.
Thanks for the tips.